21037545940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3109}}^1\times {\mathrm{17807}}^1$

素因数の和:20944

約数の個数: 48

約数和(自身を含む): 46521619200

約数和(自身を除く): 25484073260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 3109, 6218, 12436, 15545, 17807, 31090, 35614, 59071, 62180, 71228, 89035, 118142, 178070, 236284, 295355, 338333, 356140, 590710, 676666, 1181420, 1353332, 1691665, 3383330, 6766660, 55361963, 110723926, 221447852, 276809815, 553619630, 1051877297, 1107239260, 2103754594, 4207509188, 5259386485, 10518772970, 21037545940]

約数ペア:

[(1, 21037545940), (2, 10518772970), (4, 5259386485), (5, 4207509188), (10, 2103754594), (19, 1107239260), (20, 1051877297), (38, 553619630), (76, 276809815), (95, 221447852), (190, 110723926), (380, 55361963), (3109, 6766660), (6218, 3383330), (12436, 1691665), (15545, 1353332), (17807, 1181420), (31090, 676666), (35614, 590710), (59071, 356140), (62180, 338333), (71228, 295355), (89035, 236284), (118142, 178070)]