20640061988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{12487}}^1$

素因数の和:12769

約数の個数: 96

約数和(自身を含む): 46994841600

約数和(自身を除く): 26354779612

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 239, 247, 266, 364, 478, 494, 532, 956, 988, 1673, 1729, 3107, 3346, 3458, 4541, 6214, 6692, 6916, 9082, 12428, 12487, 18164, 21749, 24974, 31787, 43498, 49948, 59033, 63574, 86996, 87409, 118066, 127148, 162331, 174818, 236132, 237253, 324662, 349636, 413231, 474506, 649324, 826462, 949012, 1136317, 1652924, 1660771, 2272634, 2984393, 3084289, 3321542, 4545268, 5968786, 6168578, 6643084, 11937572, 12337156, 20890751, 21590023, 38797109, 41781502, 43180046, 56703467, 77594218, 83563004, 86360092, 113406934, 155188436, 226813868, 271579763, 396924269, 543159526, 737145071, 793848538, 1086319052, 1474290142, 1587697076, 2948580284, 5160015497, 10320030994, 20640061988]

約数ペア:

[(1, 20640061988), (2, 10320030994), (4, 5160015497), (7, 2948580284), (13, 1587697076), (14, 1474290142), (19, 1086319052), (26, 793848538), (28, 737145071), (38, 543159526), (52, 396924269), (76, 271579763), (91, 226813868), (133, 155188436), (182, 113406934), (239, 86360092), (247, 83563004), (266, 77594218), (364, 56703467), (478, 43180046), (494, 41781502), (532, 38797109), (956, 21590023), (988, 20890751), (1673, 12337156), (1729, 11937572), (3107, 6643084), (3346, 6168578), (3458, 5968786), (4541, 4545268), (6214, 3321542), (6692, 3084289), (6916, 2984393), (9082, 2272634), (12428, 1660771), (12487, 1652924), (18164, 1136317), (21749, 949012), (24974, 826462), (31787, 649324), (43498, 474506), (49948, 413231), (59033, 349636), (63574, 324662), (86996, 237253), (87409, 236132), (118066, 174818), (127148, 162331)]