20986980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{467}}^1$

素因数の和:593

約数の個数: 96

約数和(自身を含む): 67931136

約数和(自身を除く): 46944156

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 107, 140, 210, 214, 321, 420, 428, 467, 535, 642, 749, 934, 1070, 1284, 1401, 1498, 1605, 1868, 2140, 2247, 2335, 2802, 2996, 3210, 3269, 3745, 4494, 4670, 5604, 6420, 6538, 7005, 7490, 8988, 9340, 9807, 11235, 13076, 14010, 14980, 16345, 19614, 22470, 28020, 32690, 39228, 44940, 49035, 49969, 65380, 98070, 99938, 149907, 196140, 199876, 249845, 299814, 349783, 499690, 599628, 699566, 749535, 999380, 1049349, 1399132, 1499070, 1748915, 2098698, 2998140, 3497830, 4197396, 5246745, 6995660, 10493490, 20986980]

約数ペア:

[(1, 20986980), (2, 10493490), (3, 6995660), (4, 5246745), (5, 4197396), (6, 3497830), (7, 2998140), (10, 2098698), (12, 1748915), (14, 1499070), (15, 1399132), (20, 1049349), (21, 999380), (28, 749535), (30, 699566), (35, 599628), (42, 499690), (60, 349783), (70, 299814), (84, 249845), (105, 199876), (107, 196140), (140, 149907), (210, 99938), (214, 98070), (321, 65380), (420, 49969), (428, 49035), (467, 44940), (535, 39228), (642, 32690), (749, 28020), (934, 22470), (1070, 19614), (1284, 16345), (1401, 14980), (1498, 14010), (1605, 13076), (1868, 11235), (2140, 9807), (2247, 9340), (2335, 8988), (2802, 7490), (2996, 7005), (3210, 6538), (3269, 6420), (3745, 5604), (4494, 4670)]