21705090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:164

約数の個数: 128

約数和(自身を含む): 62145792

約数和(自身を除く): 40440702

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 30, 33, 34, 51, 53, 55, 66, 73, 85, 102, 106, 110, 146, 159, 165, 170, 187, 219, 255, 265, 318, 330, 365, 374, 438, 510, 530, 561, 583, 730, 795, 803, 901, 935, 1095, 1122, 1166, 1241, 1590, 1606, 1749, 1802, 1870, 2190, 2409, 2482, 2703, 2805, 2915, 3498, 3723, 3869, 4015, 4505, 4818, 5406, 5610, 5830, 6205, 7446, 7738, 8030, 8745, 9010, 9911, 11607, 12045, 12410, 13515, 13651, 17490, 18615, 19345, 19822, 23214, 24090, 27030, 27302, 29733, 37230, 38690, 40953, 42559, 49555, 58035, 59466, 65773, 68255, 81906, 85118, 99110, 116070, 127677, 131546, 136510, 148665, 197319, 204765, 212795, 255354, 297330, 328865, 394638, 409530, 425590, 638385, 657730, 723503, 986595, 1276770, 1447006, 1973190, 2170509, 3617515, 4341018, 7235030, 10852545, 21705090]

約数ペア:

[(1, 21705090), (2, 10852545), (3, 7235030), (5, 4341018), (6, 3617515), (10, 2170509), (11, 1973190), (15, 1447006), (17, 1276770), (22, 986595), (30, 723503), (33, 657730), (34, 638385), (51, 425590), (53, 409530), (55, 394638), (66, 328865), (73, 297330), (85, 255354), (102, 212795), (106, 204765), (110, 197319), (146, 148665), (159, 136510), (165, 131546), (170, 127677), (187, 116070), (219, 99110), (255, 85118), (265, 81906), (318, 68255), (330, 65773), (365, 59466), (374, 58035), (438, 49555), (510, 42559), (530, 40953), (561, 38690), (583, 37230), (730, 29733), (795, 27302), (803, 27030), (901, 24090), (935, 23214), (1095, 19822), (1122, 19345), (1166, 18615), (1241, 17490), (1590, 13651), (1606, 13515), (1749, 12410), (1802, 12045), (1870, 11607), (2190, 9911), (2409, 9010), (2482, 8745), (2703, 8030), (2805, 7738), (2915, 7446), (3498, 6205), (3723, 5830), (3869, 5610), (4015, 5406), (4505, 4818)]