20716480

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1579}}^1$

素因数の和:1637

約数の個数: 56

約数和(自身を含む): 50566320

約数和(自身を除く): 29849840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1579, 1640, 2624, 3158, 3280, 6316, 6560, 7895, 12632, 13120, 15790, 25264, 31580, 50528, 63160, 64739, 101056, 126320, 129478, 252640, 258956, 323695, 505280, 517912, 647390, 1035824, 1294780, 2071648, 2589560, 4143296, 5179120, 10358240, 20716480]

約数ペア:

[(1, 20716480), (2, 10358240), (4, 5179120), (5, 4143296), (8, 2589560), (10, 2071648), (16, 1294780), (20, 1035824), (32, 647390), (40, 517912), (41, 505280), (64, 323695), (80, 258956), (82, 252640), (160, 129478), (164, 126320), (205, 101056), (320, 64739), (328, 63160), (410, 50528), (656, 31580), (820, 25264), (1312, 15790), (1579, 13120), (1640, 12632), (2624, 7895), (3158, 6560), (3280, 6316)]