20980256

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3137}}^1$

素因数の和:3177

約数の個数: 48

約数和(自身を含む): 47446560

約数和(自身を除く): 26466304

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 76, 88, 152, 176, 209, 304, 352, 418, 608, 836, 1672, 3137, 3344, 6274, 6688, 12548, 25096, 34507, 50192, 59603, 69014, 100384, 119206, 138028, 238412, 276056, 476824, 552112, 655633, 953648, 1104224, 1311266, 1907296, 2622532, 5245064, 10490128, 20980256]

約数ペア:

[(1, 20980256), (2, 10490128), (4, 5245064), (8, 2622532), (11, 1907296), (16, 1311266), (19, 1104224), (22, 953648), (32, 655633), (38, 552112), (44, 476824), (76, 276056), (88, 238412), (152, 138028), (176, 119206), (209, 100384), (304, 69014), (352, 59603), (418, 50192), (608, 34507), (836, 25096), (1672, 12548), (3137, 6688), (3344, 6274)]