20921937192020

素因数分解:

$2^2\times 5^1\times {\mathrm{1889}}^1\times {\mathrm{22573}}^1\times {\mathrm{24533}}^1$

素因数の和:49004

約数の個数: 48

約数和(自身を含む): 43963066360080

約数和(自身を除く): 23041129168060

約数列:

[1, 2, 4, 5, 10, 20, 1889, 3778, 7556, 9445, 18890, 22573, 24533, 37780, 45146, 49066, 90292, 98132, 112865, 122665, 225730, 245330, 451460, 490660, 42640397, 46342837, 85280794, 92685674, 170561588, 185371348, 213201985, 231714185, 426403970, 463428370, 553783409, 852807940, 926856740, 1107566818, 2215133636, 2768917045, 5537834090, 11075668180, 1046096859601, 2092193719202, 4184387438404, 5230484298005, 10460968596010, 20921937192020]

約数ペア:

[(1, 20921937192020), (2, 10460968596010), (4, 5230484298005), (5, 4184387438404), (10, 2092193719202), (20, 1046096859601), (1889, 11075668180), (3778, 5537834090), (7556, 2768917045), (9445, 2215133636), (18890, 1107566818), (22573, 926856740), (24533, 852807940), (37780, 553783409), (45146, 463428370), (49066, 426403970), (90292, 231714185), (98132, 213201985), (112865, 185371348), (122665, 170561588), (225730, 92685674), (245330, 85280794), (451460, 46342837), (490660, 42640397)]