30784820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{12721}}^1$

素因数の和:12752

約数の個数: 36

約数和(自身を含む): 71065092

約数和(自身を除く): 40280272

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 12721, 25442, 50884, 63605, 127210, 139931, 254420, 279862, 559724, 699655, 1399310, 1539241, 2798620, 3078482, 6156964, 7696205, 15392410, 30784820]

約数ペア:

[(1, 30784820), (2, 15392410), (4, 7696205), (5, 6156964), (10, 3078482), (11, 2798620), (20, 1539241), (22, 1399310), (44, 699655), (55, 559724), (110, 279862), (121, 254420), (220, 139931), (242, 127210), (484, 63605), (605, 50884), (1210, 25442), (2420, 12721)]