81472340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{397}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 177590784

約数和(自身を除く): 96118444

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 331, 397, 620, 662, 794, 1324, 1588, 1655, 1985, 3310, 3970, 6620, 7940, 10261, 12307, 20522, 24614, 41044, 49228, 51305, 61535, 102610, 123070, 131407, 205220, 246140, 262814, 525628, 657035, 1314070, 2628140, 4073617, 8147234, 16294468, 20368085, 40736170, 81472340]

約数ペア:

[(1, 81472340), (2, 40736170), (4, 20368085), (5, 16294468), (10, 8147234), (20, 4073617), (31, 2628140), (62, 1314070), (124, 657035), (155, 525628), (310, 262814), (331, 246140), (397, 205220), (620, 131407), (662, 123070), (794, 102610), (1324, 61535), (1588, 51305), (1655, 49228), (1985, 41044), (3310, 24614), (3970, 20522), (6620, 12307), (7940, 10261)]