81295640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1237}}^1$

素因数の和:1332

約数の個数: 64

約数和(自身を含む): 192533760

約数和(自身を除く): 111238120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 62, 106, 124, 155, 212, 248, 265, 310, 424, 530, 620, 1060, 1237, 1240, 1643, 2120, 2474, 3286, 4948, 6185, 6572, 8215, 9896, 12370, 13144, 16430, 24740, 32860, 38347, 49480, 65561, 65720, 76694, 131122, 153388, 191735, 262244, 306776, 327805, 383470, 524488, 655610, 766940, 1311220, 1533880, 2032391, 2622440, 4064782, 8129564, 10161955, 16259128, 20323910, 40647820, 81295640]

約数ペア:

[(1, 81295640), (2, 40647820), (4, 20323910), (5, 16259128), (8, 10161955), (10, 8129564), (20, 4064782), (31, 2622440), (40, 2032391), (53, 1533880), (62, 1311220), (106, 766940), (124, 655610), (155, 524488), (212, 383470), (248, 327805), (265, 306776), (310, 262244), (424, 191735), (530, 153388), (620, 131122), (1060, 76694), (1237, 65720), (1240, 65561), (1643, 49480), (2120, 38347), (2474, 32860), (3286, 24740), (4948, 16430), (6185, 13144), (6572, 12370), (8215, 9896)]