20212448980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{95531}}^1$

素因数の和:95760

約数の個数: 48

約数和(自身を含む): 43333315200

約数和(自身を除く): 23120866220

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 149, 284, 298, 355, 596, 710, 745, 1420, 1490, 2980, 10579, 21158, 42316, 52895, 95531, 105790, 191062, 211580, 382124, 477655, 955310, 1910620, 6782701, 13565402, 14234119, 27130804, 28468238, 33913505, 56936476, 67827010, 71170595, 135654020, 142341190, 284682380, 1010622449, 2021244898, 4042489796, 5053112245, 10106224490, 20212448980]

約数ペア:

[(1, 20212448980), (2, 10106224490), (4, 5053112245), (5, 4042489796), (10, 2021244898), (20, 1010622449), (71, 284682380), (142, 142341190), (149, 135654020), (284, 71170595), (298, 67827010), (355, 56936476), (596, 33913505), (710, 28468238), (745, 27130804), (1420, 14234119), (1490, 13565402), (2980, 6782701), (10579, 1910620), (21158, 955310), (42316, 477655), (52895, 382124), (95531, 211580), (105790, 191062)]