31678140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2389}}^1$

素因数の和:2431

約数の個数: 96

約数和(自身を含む): 101183040

約数和(自身を除く): 69504900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 2210, 2389, 2652, 3315, 4420, 4778, 6630, 7167, 9556, 11945, 13260, 14334, 23890, 28668, 31057, 35835, 40613, 47780, 62114, 71670, 81226, 93171, 121839, 124228, 143340, 155285, 162452, 186342, 203065, 243678, 310570, 372684, 406130, 465855, 487356, 527969, 609195, 621140, 812260, 931710, 1055938, 1218390, 1583907, 1863420, 2111876, 2436780, 2639845, 3167814, 5279690, 6335628, 7919535, 10559380, 15839070, 31678140]

約数ペア:

[(1, 31678140), (2, 15839070), (3, 10559380), (4, 7919535), (5, 6335628), (6, 5279690), (10, 3167814), (12, 2639845), (13, 2436780), (15, 2111876), (17, 1863420), (20, 1583907), (26, 1218390), (30, 1055938), (34, 931710), (39, 812260), (51, 621140), (52, 609195), (60, 527969), (65, 487356), (68, 465855), (78, 406130), (85, 372684), (102, 310570), (130, 243678), (156, 203065), (170, 186342), (195, 162452), (204, 155285), (221, 143340), (255, 124228), (260, 121839), (340, 93171), (390, 81226), (442, 71670), (510, 62114), (663, 47780), (780, 40613), (884, 35835), (1020, 31057), (1105, 28668), (1326, 23890), (2210, 14334), (2389, 13260), (2652, 11945), (3315, 9556), (4420, 7167), (4778, 6630)]