403431940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{787}}^1$

素因数の和:905

約数の個数: 72

約数和(自身を含む): 907889472

約数和(自身を除く): 504457532

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 361, 380, 710, 722, 787, 1349, 1420, 1444, 1574, 1805, 2698, 3148, 3610, 3935, 5396, 6745, 7220, 7870, 13490, 14953, 15740, 25631, 26980, 29906, 51262, 55877, 59812, 74765, 102524, 111754, 128155, 149530, 223508, 256310, 279385, 284107, 299060, 512620, 558770, 568214, 1061663, 1117540, 1136428, 1420535, 2123326, 2841070, 4246652, 5308315, 5682140, 10616630, 20171597, 21233260, 40343194, 80686388, 100857985, 201715970, 403431940]

約数ペア:

[(1, 403431940), (2, 201715970), (4, 100857985), (5, 80686388), (10, 40343194), (19, 21233260), (20, 20171597), (38, 10616630), (71, 5682140), (76, 5308315), (95, 4246652), (142, 2841070), (190, 2123326), (284, 1420535), (355, 1136428), (361, 1117540), (380, 1061663), (710, 568214), (722, 558770), (787, 512620), (1349, 299060), (1420, 284107), (1444, 279385), (1574, 256310), (1805, 223508), (2698, 149530), (3148, 128155), (3610, 111754), (3935, 102524), (5396, 74765), (6745, 59812), (7220, 55877), (7870, 51262), (13490, 29906), (14953, 26980), (15740, 25631)]