203498780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{1031}}^1$

素因数の和:1250

約数の個数: 48

約数和(自身を含む): 436907520

約数和(自身を除く): 233408740

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 556, 695, 710, 1031, 1390, 1420, 2062, 2780, 4124, 5155, 9869, 10310, 19738, 20620, 39476, 49345, 73201, 98690, 143309, 146402, 197380, 286618, 292804, 366005, 573236, 716545, 732010, 1433090, 1464020, 2866180, 10174939, 20349878, 40699756, 50874695, 101749390, 203498780]

約数ペア:

[(1, 203498780), (2, 101749390), (4, 50874695), (5, 40699756), (10, 20349878), (20, 10174939), (71, 2866180), (139, 1464020), (142, 1433090), (278, 732010), (284, 716545), (355, 573236), (556, 366005), (695, 292804), (710, 286618), (1031, 197380), (1390, 146402), (1420, 143309), (2062, 98690), (2780, 73201), (4124, 49345), (5155, 39476), (9869, 20620), (10310, 19738)]