638549920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:287

約数の個数: 192

約数和(自身を含む): 1704810240

約数和(自身を除く): 1066260320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 59, 68, 80, 85, 92, 115, 118, 136, 160, 170, 173, 184, 230, 236, 272, 295, 340, 346, 368, 391, 460, 472, 544, 590, 680, 692, 736, 782, 865, 920, 944, 1003, 1180, 1357, 1360, 1384, 1564, 1730, 1840, 1888, 1955, 2006, 2360, 2714, 2720, 2768, 2941, 3128, 3460, 3680, 3910, 3979, 4012, 4720, 5015, 5428, 5536, 5882, 6256, 6785, 6920, 7820, 7958, 8024, 9440, 10030, 10207, 10856, 11764, 12512, 13570, 13840, 14705, 15640, 15916, 16048, 19895, 20060, 20414, 21712, 23069, 23528, 27140, 27680, 29410, 31280, 31832, 32096, 39790, 40120, 40828, 43424, 46138, 47056, 51035, 54280, 58820, 62560, 63664, 67643, 79580, 80240, 81656, 92276, 94112, 102070, 108560, 115345, 117640, 127328, 135286, 159160, 160480, 163312, 173519, 184552, 204140, 217120, 230690, 234761, 235280, 270572, 318320, 326624, 338215, 347038, 369104, 408280, 461380, 469522, 470560, 541144, 636640, 676430, 694076, 738208, 816560, 867595, 922760, 939044, 1082288, 1173805, 1352860, 1388152, 1633120, 1735190, 1845520, 1878088, 2164576, 2347610, 2705720, 2776304, 3470380, 3691040, 3756176, 3990937, 4695220, 5411440, 5552608, 6940760, 7512352, 7981874, 9390440, 10822880, 13881520, 15963748, 18780880, 19954685, 27763040, 31927496, 37561760, 39909370, 63854992, 79818740, 127709984, 159637480, 319274960, 638549920]

約数ペア:

[(1, 638549920), (2, 319274960), (4, 159637480), (5, 127709984), (8, 79818740), (10, 63854992), (16, 39909370), (17, 37561760), (20, 31927496), (23, 27763040), (32, 19954685), (34, 18780880), (40, 15963748), (46, 13881520), (59, 10822880), (68, 9390440), (80, 7981874), (85, 7512352), (92, 6940760), (115, 5552608), (118, 5411440), (136, 4695220), (160, 3990937), (170, 3756176), (173, 3691040), (184, 3470380), (230, 2776304), (236, 2705720), (272, 2347610), (295, 2164576), (340, 1878088), (346, 1845520), (368, 1735190), (391, 1633120), (460, 1388152), (472, 1352860), (544, 1173805), (590, 1082288), (680, 939044), (692, 922760), (736, 867595), (782, 816560), (865, 738208), (920, 694076), (944, 676430), (1003, 636640), (1180, 541144), (1357, 470560), (1360, 469522), (1384, 461380), (1564, 408280), (1730, 369104), (1840, 347038), (1888, 338215), (1955, 326624), (2006, 318320), (2360, 270572), (2714, 235280), (2720, 234761), (2768, 230690), (2941, 217120), (3128, 204140), (3460, 184552), (3680, 173519), (3910, 163312), (3979, 160480), (4012, 159160), (4720, 135286), (5015, 127328), (5428, 117640), (5536, 115345), (5882, 108560), (6256, 102070), (6785, 94112), (6920, 92276), (7820, 81656), (7958, 80240), (8024, 79580), (9440, 67643), (10030, 63664), (10207, 62560), (10856, 58820), (11764, 54280), (12512, 51035), (13570, 47056), (13840, 46138), (14705, 43424), (15640, 40828), (15916, 40120), (16048, 39790), (19895, 32096), (20060, 31832), (20414, 31280), (21712, 29410), (23069, 27680), (23528, 27140)]