209138580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{165983}}^1$

素因数の和:166005

約数の個数: 72

約数和(自身を含む): 725018112

約数和(自身を除く): 515879532

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, 165983, 331966, 497949, 663932, 829915, 995898, 1161881, 1493847, 1659830, 1991796, 2323762, 2489745, 2987694, 3319660, 3485643, 4647524, 4979490, 5809405, 5975388, 6971286, 7469235, 9958980, 10456929, 11618810, 13942572, 14938470, 17428215, 20913858, 23237620, 29876940, 34856430, 41827716, 52284645, 69712860, 104569290, 209138580]

約数ペア:

[(1, 209138580), (2, 104569290), (3, 69712860), (4, 52284645), (5, 41827716), (6, 34856430), (7, 29876940), (9, 23237620), (10, 20913858), (12, 17428215), (14, 14938470), (15, 13942572), (18, 11618810), (20, 10456929), (21, 9958980), (28, 7469235), (30, 6971286), (35, 5975388), (36, 5809405), (42, 4979490), (45, 4647524), (60, 3485643), (63, 3319660), (70, 2987694), (84, 2489745), (90, 2323762), (105, 1991796), (126, 1659830), (140, 1493847), (180, 1161881), (210, 995898), (252, 829915), (315, 663932), (420, 497949), (630, 331966), (1260, 165983)]