18699686740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{653}}^1\times {\mathrm{29221}}^1$

素因数の和:29897

約数の個数: 72

約数和(自身を含む): 45752184072

約数和(自身を除く): 27052497332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 653, 980, 1306, 2612, 3265, 4571, 6530, 9142, 13060, 18284, 22855, 29221, 31997, 45710, 58442, 63994, 91420, 116884, 127988, 146105, 159985, 204547, 292210, 319970, 409094, 584420, 639940, 818188, 1022735, 1431829, 2045470, 2863658, 4090940, 5727316, 7159145, 14318290, 19081313, 28636580, 38162626, 76325252, 95406565, 133569191, 190813130, 267138382, 381626260, 534276764, 667845955, 934984337, 1335691910, 1869968674, 2671383820, 3739937348, 4674921685, 9349843370, 18699686740]

約数ペア:

[(1, 18699686740), (2, 9349843370), (4, 4674921685), (5, 3739937348), (7, 2671383820), (10, 1869968674), (14, 1335691910), (20, 934984337), (28, 667845955), (35, 534276764), (49, 381626260), (70, 267138382), (98, 190813130), (140, 133569191), (196, 95406565), (245, 76325252), (490, 38162626), (653, 28636580), (980, 19081313), (1306, 14318290), (2612, 7159145), (3265, 5727316), (4571, 4090940), (6530, 2863658), (9142, 2045470), (13060, 1431829), (18284, 1022735), (22855, 818188), (29221, 639940), (31997, 584420), (45710, 409094), (58442, 319970), (63994, 292210), (91420, 204547), (116884, 159985), (127988, 146105)]