21003702980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{163861}}^1$

素因数の和:163929

約数の個数: 96

約数和(自身を含む): 52029462240

約数和(自身を除く): 31025759260

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 29, 34, 52, 58, 65, 68, 85, 116, 130, 145, 170, 221, 260, 290, 340, 377, 442, 493, 580, 754, 884, 986, 1105, 1508, 1885, 1972, 2210, 2465, 3770, 4420, 4930, 6409, 7540, 9860, 12818, 25636, 32045, 64090, 128180, 163861, 327722, 655444, 819305, 1638610, 2130193, 2785637, 3277220, 4260386, 4751969, 5571274, 8520772, 9503938, 10650965, 11142548, 13928185, 19007876, 21301930, 23759845, 27856370, 36213281, 42603860, 47519690, 55712740, 61775597, 72426562, 80783473, 95039380, 123551194, 144853124, 161566946, 181066405, 247102388, 308877985, 323133892, 362132810, 403917365, 617755970, 724265620, 807834730, 1050185149, 1235511940, 1615669460, 2100370298, 4200740596, 5250925745, 10501851490, 21003702980]

約数ペア:

[(1, 21003702980), (2, 10501851490), (4, 5250925745), (5, 4200740596), (10, 2100370298), (13, 1615669460), (17, 1235511940), (20, 1050185149), (26, 807834730), (29, 724265620), (34, 617755970), (52, 403917365), (58, 362132810), (65, 323133892), (68, 308877985), (85, 247102388), (116, 181066405), (130, 161566946), (145, 144853124), (170, 123551194), (221, 95039380), (260, 80783473), (290, 72426562), (340, 61775597), (377, 55712740), (442, 47519690), (493, 42603860), (580, 36213281), (754, 27856370), (884, 23759845), (986, 21301930), (1105, 19007876), (1508, 13928185), (1885, 11142548), (1972, 10650965), (2210, 9503938), (2465, 8520772), (3770, 5571274), (4420, 4751969), (4930, 4260386), (6409, 3277220), (7540, 2785637), (9860, 2130193), (12818, 1638610), (25636, 819305), (32045, 655444), (64090, 327722), (128180, 163861)]