21987331340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{350899}}^1$

素因数の和:351162

約数の個数: 48

約数和(自身を含む): 49931666400

約数和(自身を除く): 27944335060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 482, 964, 1205, 2410, 3133, 4820, 6266, 12532, 15665, 31330, 62660, 350899, 701798, 1403596, 1754495, 3508990, 4561687, 7017980, 9123374, 18246748, 22808435, 45616870, 84566659, 91233740, 169133318, 338266636, 422833295, 845666590, 1099366567, 1691333180, 2198733134, 4397466268, 5496832835, 10993665670, 21987331340]

約数ペア:

[(1, 21987331340), (2, 10993665670), (4, 5496832835), (5, 4397466268), (10, 2198733134), (13, 1691333180), (20, 1099366567), (26, 845666590), (52, 422833295), (65, 338266636), (130, 169133318), (241, 91233740), (260, 84566659), (482, 45616870), (964, 22808435), (1205, 18246748), (2410, 9123374), (3133, 7017980), (4820, 4561687), (6266, 3508990), (12532, 1754495), (15665, 1403596), (31330, 701798), (62660, 350899)]