53972780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 116121600

約数和(自身を除く): 62148820

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 191, 199, 284, 355, 382, 398, 710, 764, 796, 955, 995, 1420, 1910, 1990, 3820, 3980, 13561, 14129, 27122, 28258, 38009, 54244, 56516, 67805, 70645, 76018, 135610, 141290, 152036, 190045, 271220, 282580, 380090, 760180, 2698639, 5397278, 10794556, 13493195, 26986390, 53972780]

約数ペア:

[(1, 53972780), (2, 26986390), (4, 13493195), (5, 10794556), (10, 5397278), (20, 2698639), (71, 760180), (142, 380090), (191, 282580), (199, 271220), (284, 190045), (355, 152036), (382, 141290), (398, 135610), (710, 76018), (764, 70645), (796, 67805), (955, 56516), (995, 54244), (1420, 38009), (1910, 28258), (1990, 27122), (3820, 14129), (3980, 13561)]