9920830

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:324

約数の個数: 32

約数和(自身を含む): 18429120

約数和(自身を除く): 8508290

約数列:

[1, 2, 5, 10, 71, 89, 142, 157, 178, 314, 355, 445, 710, 785, 890, 1570, 6319, 11147, 12638, 13973, 22294, 27946, 31595, 55735, 63190, 69865, 111470, 139730, 992083, 1984166, 4960415, 9920830]

約数ペア:

[(1, 9920830), (2, 4960415), (5, 1984166), (10, 992083), (71, 139730), (89, 111470), (142, 69865), (157, 63190), (178, 55735), (314, 31595), (355, 27946), (445, 22294), (710, 13973), (785, 12638), (890, 11147), (1570, 6319)]