19843668

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 54654600

約数和(自身を除く): 34810932

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 109, 117, 156, 218, 234, 327, 389, 436, 468, 654, 778, 981, 1167, 1308, 1417, 1556, 1962, 2334, 2834, 3501, 3924, 4251, 4668, 5057, 5668, 7002, 8502, 10114, 12753, 14004, 15171, 17004, 20228, 25506, 30342, 42401, 45513, 51012, 60684, 84802, 91026, 127203, 169604, 182052, 254406, 381609, 508812, 551213, 763218, 1102426, 1526436, 1653639, 2204852, 3307278, 4960917, 6614556, 9921834, 19843668]

約数ペア:

[(1, 19843668), (2, 9921834), (3, 6614556), (4, 4960917), (6, 3307278), (9, 2204852), (12, 1653639), (13, 1526436), (18, 1102426), (26, 763218), (36, 551213), (39, 508812), (52, 381609), (78, 254406), (109, 182052), (117, 169604), (156, 127203), (218, 91026), (234, 84802), (327, 60684), (389, 51012), (436, 45513), (468, 42401), (654, 30342), (778, 25506), (981, 20228), (1167, 17004), (1308, 15171), (1417, 14004), (1556, 12753), (1962, 10114), (2334, 8502), (2834, 7002), (3501, 5668), (3924, 5057), (4251, 4668)]