30987460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1049}}^1$

素因数の和:1276

約数の個数: 48

約数和(自身を含む): 74793600

約数和(自身を除く): 43806140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 844, 1049, 1055, 1477, 2098, 2110, 2954, 4196, 4220, 5245, 5908, 7343, 7385, 10490, 14686, 14770, 20980, 29372, 29540, 36715, 73430, 146860, 221339, 442678, 885356, 1106695, 1549373, 2213390, 3098746, 4426780, 6197492, 7746865, 15493730, 30987460]

約数ペア:

[(1, 30987460), (2, 15493730), (4, 7746865), (5, 6197492), (7, 4426780), (10, 3098746), (14, 2213390), (20, 1549373), (28, 1106695), (35, 885356), (70, 442678), (140, 221339), (211, 146860), (422, 73430), (844, 36715), (1049, 29540), (1055, 29372), (1477, 20980), (2098, 14770), (2110, 14686), (2954, 10490), (4196, 7385), (4220, 7343), (5245, 5908)]