20672964

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 56830592

約数和(自身を除く): 36157628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 163, 234, 271, 326, 468, 489, 542, 652, 813, 978, 1084, 1467, 1626, 1956, 2119, 2439, 2934, 3252, 3523, 4238, 4878, 5868, 6357, 7046, 8476, 9756, 10569, 12714, 14092, 19071, 21138, 25428, 31707, 38142, 42276, 44173, 63414, 76284, 88346, 126828, 132519, 176692, 265038, 397557, 530076, 574249, 795114, 1148498, 1590228, 1722747, 2296996, 3445494, 5168241, 6890988, 10336482, 20672964]

約数ペア:

[(1, 20672964), (2, 10336482), (3, 6890988), (4, 5168241), (6, 3445494), (9, 2296996), (12, 1722747), (13, 1590228), (18, 1148498), (26, 795114), (36, 574249), (39, 530076), (52, 397557), (78, 265038), (117, 176692), (156, 132519), (163, 126828), (234, 88346), (271, 76284), (326, 63414), (468, 44173), (489, 42276), (542, 38142), (652, 31707), (813, 25428), (978, 21138), (1084, 19071), (1467, 14092), (1626, 12714), (1956, 10569), (2119, 9756), (2439, 8476), (2934, 7046), (3252, 6357), (3523, 5868), (4238, 4878)]