320247980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39733}}^1$

素因数の和:39786

約数の個数: 48

約数和(自身を含む): 747634944

約数和(自身を除く): 427386964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 39733, 79466, 158932, 198665, 397330, 516529, 794660, 1033058, 1231723, 2066116, 2463446, 2582645, 4926892, 5165290, 6158615, 10330580, 12317230, 16012399, 24634460, 32024798, 64049596, 80061995, 160123990, 320247980]

約数ペア:

[(1, 320247980), (2, 160123990), (4, 80061995), (5, 64049596), (10, 32024798), (13, 24634460), (20, 16012399), (26, 12317230), (31, 10330580), (52, 6158615), (62, 5165290), (65, 4926892), (124, 2582645), (130, 2463446), (155, 2066116), (260, 1231723), (310, 1033058), (403, 794660), (620, 516529), (806, 397330), (1612, 198665), (2015, 158932), (4030, 79466), (8060, 39733)]