940990180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{2153}}^1$

素因数の和:2257

約数の個数: 72

約数和(自身を含む): 2182269096

約数和(自身を除く): 1241278916

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1681, 2132, 2153, 2665, 3362, 4306, 5330, 6724, 8405, 8612, 10660, 10765, 16810, 21530, 21853, 27989, 33620, 43060, 43706, 55978, 87412, 88273, 109265, 111956, 139945, 176546, 218530, 279890, 353092, 437060, 441365, 559780, 882730, 1147549, 1765460, 2295098, 3619193, 4590196, 5737745, 7238386, 11475490, 14476772, 18095965, 22950980, 36191930, 47049509, 72383860, 94099018, 188198036, 235247545, 470495090, 940990180]

約数ペア:

[(1, 940990180), (2, 470495090), (4, 235247545), (5, 188198036), (10, 94099018), (13, 72383860), (20, 47049509), (26, 36191930), (41, 22950980), (52, 18095965), (65, 14476772), (82, 11475490), (130, 7238386), (164, 5737745), (205, 4590196), (260, 3619193), (410, 2295098), (533, 1765460), (820, 1147549), (1066, 882730), (1681, 559780), (2132, 441365), (2153, 437060), (2665, 353092), (3362, 279890), (4306, 218530), (5330, 176546), (6724, 139945), (8405, 111956), (8612, 109265), (10660, 88273), (10765, 87412), (16810, 55978), (21530, 43706), (21853, 43060), (27989, 33620)]