220154980

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 468840960

約数和(自身を除く): 248685980

約数列:

[1, 2, 4, 5, 10, 20, 151, 269, 271, 302, 538, 542, 604, 755, 1076, 1084, 1345, 1355, 1510, 2690, 2710, 3020, 5380, 5420, 40619, 40921, 72899, 81238, 81842, 145798, 162476, 163684, 203095, 204605, 291596, 364495, 406190, 409210, 728990, 812380, 818420, 1457980, 11007749, 22015498, 44030996, 55038745, 110077490, 220154980]

約数ペア:

[(1, 220154980), (2, 110077490), (4, 55038745), (5, 44030996), (10, 22015498), (20, 11007749), (151, 1457980), (269, 818420), (271, 812380), (302, 728990), (538, 409210), (542, 406190), (604, 364495), (755, 291596), (1076, 204605), (1084, 203095), (1345, 163684), (1355, 162476), (1510, 145798), (2690, 81842), (2710, 81238), (3020, 72899), (5380, 40921), (5420, 40619)]