20402240

素因数分解:

$2^6\times 5^1\times {\mathrm{103}}^1\times {\mathrm{619}}^1$

素因数の和:739

約数の個数: 56

約数和(自身を含む): 49133760

約数和(自身を除く): 28731520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 160, 206, 320, 412, 515, 619, 824, 1030, 1238, 1648, 2060, 2476, 3095, 3296, 4120, 4952, 6190, 6592, 8240, 9904, 12380, 16480, 19808, 24760, 32960, 39616, 49520, 63757, 99040, 127514, 198080, 255028, 318785, 510056, 637570, 1020112, 1275140, 2040224, 2550280, 4080448, 5100560, 10201120, 20402240]

約数ペア:

[(1, 20402240), (2, 10201120), (4, 5100560), (5, 4080448), (8, 2550280), (10, 2040224), (16, 1275140), (20, 1020112), (32, 637570), (40, 510056), (64, 318785), (80, 255028), (103, 198080), (160, 127514), (206, 99040), (320, 63757), (412, 49520), (515, 39616), (619, 32960), (824, 24760), (1030, 19808), (1238, 16480), (1648, 12380), (2060, 9904), (2476, 8240), (3095, 6592), (3296, 6190), (4120, 4952)]