1313447680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:550

約数の個数: 144

約数和(自身を含む): 3296563200

約数和(自身を除く): 1983115520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 79, 80, 124, 128, 155, 158, 160, 248, 256, 310, 316, 320, 395, 419, 496, 620, 632, 640, 790, 838, 992, 1240, 1264, 1280, 1580, 1676, 1984, 2095, 2449, 2480, 2528, 3160, 3352, 3968, 4190, 4898, 4960, 5056, 6320, 6704, 7936, 8380, 9796, 9920, 10112, 12245, 12640, 12989, 13408, 16760, 19592, 19840, 20224, 24490, 25280, 25978, 26816, 33101, 33520, 39184, 39680, 48980, 50560, 51956, 53632, 64945, 66202, 67040, 78368, 97960, 101120, 103912, 107264, 129890, 132404, 134080, 156736, 165505, 195920, 207824, 259780, 264808, 268160, 313472, 331010, 391840, 415648, 519560, 529616, 536320, 626944, 662020, 783680, 831296, 1026131, 1039120, 1059232, 1324040, 1567360, 1662592, 2052262, 2078240, 2118464, 2648080, 3134720, 3325184, 4104524, 4156480, 4236928, 5130655, 5296160, 8209048, 8312960, 8473856, 10261310, 10592320, 16418096, 16625920, 20522620, 21184640, 32836192, 41045240, 42369280, 65672384, 82090480, 131344768, 164180960, 262689536, 328361920, 656723840, 1313447680]

約数ペア:

[(1, 1313447680), (2, 656723840), (4, 328361920), (5, 262689536), (8, 164180960), (10, 131344768), (16, 82090480), (20, 65672384), (31, 42369280), (32, 41045240), (40, 32836192), (62, 21184640), (64, 20522620), (79, 16625920), (80, 16418096), (124, 10592320), (128, 10261310), (155, 8473856), (158, 8312960), (160, 8209048), (248, 5296160), (256, 5130655), (310, 4236928), (316, 4156480), (320, 4104524), (395, 3325184), (419, 3134720), (496, 2648080), (620, 2118464), (632, 2078240), (640, 2052262), (790, 1662592), (838, 1567360), (992, 1324040), (1240, 1059232), (1264, 1039120), (1280, 1026131), (1580, 831296), (1676, 783680), (1984, 662020), (2095, 626944), (2449, 536320), (2480, 529616), (2528, 519560), (3160, 415648), (3352, 391840), (3968, 331010), (4190, 313472), (4898, 268160), (4960, 264808), (5056, 259780), (6320, 207824), (6704, 195920), (7936, 165505), (8380, 156736), (9796, 134080), (9920, 132404), (10112, 129890), (12245, 107264), (12640, 103912), (12989, 101120), (13408, 97960), (16760, 78368), (19592, 67040), (19840, 66202), (20224, 64945), (24490, 53632), (25280, 51956), (25978, 50560), (26816, 48980), (33101, 39680), (33520, 39184)]