691231970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{103}}^1$

素因数の和:185

約数の個数: 144

約数和(自身を含む): 1566257472

約数和(自身を除く): 875025502

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 65, 95, 103, 110, 130, 143, 169, 190, 206, 209, 247, 286, 338, 361, 418, 494, 515, 715, 722, 845, 1030, 1045, 1133, 1235, 1339, 1430, 1690, 1805, 1859, 1957, 2090, 2266, 2470, 2678, 2717, 3211, 3610, 3718, 3914, 3971, 4693, 5434, 5665, 6422, 6695, 7942, 9295, 9386, 9785, 11330, 13390, 13585, 14729, 16055, 17407, 18590, 19570, 19855, 21527, 23465, 25441, 27170, 29458, 32110, 34814, 35321, 37183, 39710, 43054, 46930, 50882, 51623, 61009, 70642, 73645, 74366, 87035, 103246, 107635, 122018, 127205, 147290, 174070, 176605, 185915, 191477, 215270, 254410, 258115, 279851, 305045, 330733, 353210, 371830, 382954, 409013, 483379, 516230, 559702, 610090, 661466, 671099, 818026, 957385, 966758, 1342198, 1399255, 1653665, 1914770, 2045065, 2416895, 2798510, 3307330, 3355495, 3638063, 4090130, 4833790, 5317169, 6283927, 6710990, 7276126, 10634338, 12567854, 18190315, 26585845, 31419635, 36380630, 53171690, 62839270, 69123197, 138246394, 345615985, 691231970]

約数ペア:

[(1, 691231970), (2, 345615985), (5, 138246394), (10, 69123197), (11, 62839270), (13, 53171690), (19, 36380630), (22, 31419635), (26, 26585845), (38, 18190315), (55, 12567854), (65, 10634338), (95, 7276126), (103, 6710990), (110, 6283927), (130, 5317169), (143, 4833790), (169, 4090130), (190, 3638063), (206, 3355495), (209, 3307330), (247, 2798510), (286, 2416895), (338, 2045065), (361, 1914770), (418, 1653665), (494, 1399255), (515, 1342198), (715, 966758), (722, 957385), (845, 818026), (1030, 671099), (1045, 661466), (1133, 610090), (1235, 559702), (1339, 516230), (1430, 483379), (1690, 409013), (1805, 382954), (1859, 371830), (1957, 353210), (2090, 330733), (2266, 305045), (2470, 279851), (2678, 258115), (2717, 254410), (3211, 215270), (3610, 191477), (3718, 185915), (3914, 176605), (3971, 174070), (4693, 147290), (5434, 127205), (5665, 122018), (6422, 107635), (6695, 103246), (7942, 87035), (9295, 74366), (9386, 73645), (9785, 70642), (11330, 61009), (13390, 51623), (13585, 50882), (14729, 46930), (16055, 43054), (17407, 39710), (18590, 37183), (19570, 35321), (19855, 34814), (21527, 32110), (23465, 29458), (25441, 27170)]