20901816

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:325

約数の個数: 96

約数和(自身を含む): 61785360

約数和(自身を除く): 40883544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 137, 156, 163, 234, 274, 312, 326, 411, 468, 489, 548, 652, 822, 936, 978, 1096, 1233, 1304, 1467, 1644, 1781, 1956, 2119, 2466, 2934, 3288, 3562, 3912, 4238, 4932, 5343, 5868, 6357, 7124, 8476, 9864, 10686, 11736, 12714, 14248, 16029, 16952, 19071, 21372, 22331, 25428, 32058, 38142, 42744, 44662, 50856, 64116, 66993, 76284, 89324, 128232, 133986, 152568, 178648, 200979, 267972, 290303, 401958, 535944, 580606, 803916, 870909, 1161212, 1607832, 1741818, 2322424, 2612727, 3483636, 5225454, 6967272, 10450908, 20901816]

約数ペア:

[(1, 20901816), (2, 10450908), (3, 6967272), (4, 5225454), (6, 3483636), (8, 2612727), (9, 2322424), (12, 1741818), (13, 1607832), (18, 1161212), (24, 870909), (26, 803916), (36, 580606), (39, 535944), (52, 401958), (72, 290303), (78, 267972), (104, 200979), (117, 178648), (137, 152568), (156, 133986), (163, 128232), (234, 89324), (274, 76284), (312, 66993), (326, 64116), (411, 50856), (468, 44662), (489, 42744), (548, 38142), (652, 32058), (822, 25428), (936, 22331), (978, 21372), (1096, 19071), (1233, 16952), (1304, 16029), (1467, 14248), (1644, 12714), (1781, 11736), (1956, 10686), (2119, 9864), (2466, 8476), (2934, 7124), (3288, 6357), (3562, 5868), (3912, 5343), (4238, 4932)]