1228840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 2856960

約数和(自身を除く): 1628120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 991, 1240, 1982, 3964, 4955, 7928, 9910, 19820, 30721, 39640, 61442, 122884, 153605, 245768, 307210, 614420, 1228840]

約数ペア:

[(1, 1228840), (2, 614420), (4, 307210), (5, 245768), (8, 153605), (10, 122884), (20, 61442), (31, 39640), (40, 30721), (62, 19820), (124, 9910), (155, 7928), (248, 4955), (310, 3964), (620, 1982), (991, 1240)]