20197190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:106

約数の個数: 96

約数和(自身を含む): 45061920

約数和(自身を除く): 24864730

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 37, 38, 65, 74, 85, 95, 130, 169, 170, 185, 190, 221, 247, 323, 338, 370, 442, 481, 494, 629, 646, 703, 845, 962, 1105, 1235, 1258, 1406, 1615, 1690, 2210, 2405, 2470, 2873, 3145, 3211, 3230, 3515, 4199, 4810, 5746, 6253, 6290, 6422, 7030, 8177, 8398, 9139, 11951, 12506, 14365, 16055, 16354, 18278, 20995, 23902, 28730, 31265, 32110, 40885, 41990, 45695, 54587, 59755, 62530, 81770, 91390, 106301, 109174, 118807, 119510, 155363, 212602, 237614, 272935, 310726, 531505, 545870, 594035, 776815, 1063010, 1188070, 1553630, 2019719, 4039438, 10098595, 20197190]

約数ペア:

[(1, 20197190), (2, 10098595), (5, 4039438), (10, 2019719), (13, 1553630), (17, 1188070), (19, 1063010), (26, 776815), (34, 594035), (37, 545870), (38, 531505), (65, 310726), (74, 272935), (85, 237614), (95, 212602), (130, 155363), (169, 119510), (170, 118807), (185, 109174), (190, 106301), (221, 91390), (247, 81770), (323, 62530), (338, 59755), (370, 54587), (442, 45695), (481, 41990), (494, 40885), (629, 32110), (646, 31265), (703, 28730), (845, 23902), (962, 20995), (1105, 18278), (1235, 16354), (1258, 16055), (1406, 14365), (1615, 12506), (1690, 11951), (2210, 9139), (2405, 8398), (2470, 8177), (2873, 7030), (3145, 6422), (3211, 6290), (3230, 6253), (3515, 5746), (4199, 4810)]