20121755560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{523}}^1\times {\mathrm{1951}}^1$

素因数の和:2531

約数の個数: 128

約数和(自身を含む): 49710412800

約数和(自身を除く): 29588657240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 34, 40, 58, 68, 85, 116, 136, 145, 170, 232, 290, 340, 493, 523, 580, 680, 986, 1046, 1160, 1951, 1972, 2092, 2465, 2615, 3902, 3944, 4184, 4930, 5230, 7804, 8891, 9755, 9860, 10460, 15167, 15608, 17782, 19510, 19720, 20920, 30334, 33167, 35564, 39020, 44455, 56579, 60668, 66334, 71128, 75835, 78040, 88910, 113158, 121336, 132668, 151670, 165835, 177820, 226316, 257839, 265336, 282895, 303340, 331670, 355640, 452632, 515678, 565790, 606680, 663340, 961843, 1020373, 1031356, 1131580, 1289195, 1326680, 1923686, 2040746, 2062712, 2263160, 2578390, 3847372, 4081492, 4809215, 5101865, 5156780, 7694744, 8162984, 9618430, 10203730, 10313560, 17346341, 19236860, 20407460, 29590817, 34692682, 38473720, 40814920, 59181634, 69385364, 86731705, 118363268, 138770728, 147954085, 173463410, 236726536, 295908170, 346926820, 503043889, 591816340, 693853640, 1006087778, 1183632680, 2012175556, 2515219445, 4024351112, 5030438890, 10060877780, 20121755560]

約数ペア:

[(1, 20121755560), (2, 10060877780), (4, 5030438890), (5, 4024351112), (8, 2515219445), (10, 2012175556), (17, 1183632680), (20, 1006087778), (29, 693853640), (34, 591816340), (40, 503043889), (58, 346926820), (68, 295908170), (85, 236726536), (116, 173463410), (136, 147954085), (145, 138770728), (170, 118363268), (232, 86731705), (290, 69385364), (340, 59181634), (493, 40814920), (523, 38473720), (580, 34692682), (680, 29590817), (986, 20407460), (1046, 19236860), (1160, 17346341), (1951, 10313560), (1972, 10203730), (2092, 9618430), (2465, 8162984), (2615, 7694744), (3902, 5156780), (3944, 5101865), (4184, 4809215), (4930, 4081492), (5230, 3847372), (7804, 2578390), (8891, 2263160), (9755, 2062712), (9860, 2040746), (10460, 1923686), (15167, 1326680), (15608, 1289195), (17782, 1131580), (19510, 1031356), (19720, 1020373), (20920, 961843), (30334, 663340), (33167, 606680), (35564, 565790), (39020, 515678), (44455, 452632), (56579, 355640), (60668, 331670), (66334, 303340), (71128, 282895), (75835, 265336), (78040, 257839), (88910, 226316), (113158, 177820), (121336, 165835), (132668, 151670)]