81472860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64661}}^1$

素因数の和:64683

約数の個数: 72

約数和(自身を含む): 282443616

約数和(自身を除く): 200970756

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64661, 129322, 193983, 258644, 323305, 387966, 452627, 581949, 646610, 775932, 905254, 969915, 1163898, 1293220, 1357881, 1810508, 1939830, 2263135, 2327796, 2715762, 2909745, 3879660, 4073643, 4526270, 5431524, 5819490, 6789405, 8147286, 9052540, 11638980, 13578810, 16294572, 20368215, 27157620, 40736430, 81472860]

約数ペア:

[(1, 81472860), (2, 40736430), (3, 27157620), (4, 20368215), (5, 16294572), (6, 13578810), (7, 11638980), (9, 9052540), (10, 8147286), (12, 6789405), (14, 5819490), (15, 5431524), (18, 4526270), (20, 4073643), (21, 3879660), (28, 2909745), (30, 2715762), (35, 2327796), (36, 2263135), (42, 1939830), (45, 1810508), (60, 1357881), (63, 1293220), (70, 1163898), (84, 969915), (90, 905254), (105, 775932), (126, 646610), (140, 581949), (180, 452627), (210, 387966), (252, 323305), (315, 258644), (420, 193983), (630, 129322), (1260, 64661)]