21071940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11329}}^1$

素因数の和:11372

約数の個数: 48

約数和(自身を含む): 60910080

約数和(自身を除く): 39838140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 11329, 22658, 33987, 45316, 56645, 67974, 113290, 135948, 169935, 226580, 339870, 351199, 679740, 702398, 1053597, 1404796, 1755995, 2107194, 3511990, 4214388, 5267985, 7023980, 10535970, 21071940]

約数ペア:

[(1, 21071940), (2, 10535970), (3, 7023980), (4, 5267985), (5, 4214388), (6, 3511990), (10, 2107194), (12, 1755995), (15, 1404796), (20, 1053597), (30, 702398), (31, 679740), (60, 351199), (62, 339870), (93, 226580), (124, 169935), (155, 135948), (186, 113290), (310, 67974), (372, 56645), (465, 45316), (620, 33987), (930, 22658), (1860, 11329)]