31421780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{7109}}^1$

素因数の和:7148

約数の個数: 48

約数和(自身を含む): 75252240

約数和(自身を除く): 43830460

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 7109, 14218, 28436, 35545, 71090, 92417, 120853, 142180, 184834, 241706, 369668, 462085, 483412, 604265, 924170, 1208530, 1571089, 1848340, 2417060, 3142178, 6284356, 7855445, 15710890, 31421780]

約数ペア:

[(1, 31421780), (2, 15710890), (4, 7855445), (5, 6284356), (10, 3142178), (13, 2417060), (17, 1848340), (20, 1571089), (26, 1208530), (34, 924170), (52, 604265), (65, 483412), (68, 462085), (85, 369668), (130, 241706), (170, 184834), (221, 142180), (260, 120853), (340, 92417), (442, 71090), (884, 35545), (1105, 28436), (2210, 14218), (4420, 7109)]