204920940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1483}}^1$

素因数の和:1556

約数の個数: 144

約数和(自身を含む): 682117632

約数和(自身を除く): 477196692

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 140, 141, 147, 188, 196, 210, 235, 245, 282, 294, 329, 420, 470, 490, 564, 588, 658, 705, 735, 940, 980, 987, 1316, 1410, 1470, 1483, 1645, 1974, 2303, 2820, 2940, 2966, 3290, 3948, 4449, 4606, 4935, 5932, 6580, 6909, 7415, 8898, 9212, 9870, 10381, 11515, 13818, 14830, 17796, 19740, 20762, 22245, 23030, 27636, 29660, 31143, 34545, 41524, 44490, 46060, 51905, 62286, 69090, 69701, 72667, 88980, 103810, 124572, 138180, 139402, 145334, 155715, 207620, 209103, 218001, 278804, 290668, 311430, 348505, 363335, 418206, 436002, 487907, 622860, 697010, 726670, 836412, 872004, 975814, 1045515, 1090005, 1394020, 1453340, 1463721, 1951628, 2091030, 2180010, 2439535, 2927442, 3415349, 4182060, 4360020, 4879070, 5854884, 6830698, 7318605, 9758140, 10246047, 13661396, 14637210, 17076745, 20492094, 29274420, 34153490, 40984188, 51230235, 68306980, 102460470, 204920940]

約数ペア:

[(1, 204920940), (2, 102460470), (3, 68306980), (4, 51230235), (5, 40984188), (6, 34153490), (7, 29274420), (10, 20492094), (12, 17076745), (14, 14637210), (15, 13661396), (20, 10246047), (21, 9758140), (28, 7318605), (30, 6830698), (35, 5854884), (42, 4879070), (47, 4360020), (49, 4182060), (60, 3415349), (70, 2927442), (84, 2439535), (94, 2180010), (98, 2091030), (105, 1951628), (140, 1463721), (141, 1453340), (147, 1394020), (188, 1090005), (196, 1045515), (210, 975814), (235, 872004), (245, 836412), (282, 726670), (294, 697010), (329, 622860), (420, 487907), (470, 436002), (490, 418206), (564, 363335), (588, 348505), (658, 311430), (705, 290668), (735, 278804), (940, 218001), (980, 209103), (987, 207620), (1316, 155715), (1410, 145334), (1470, 139402), (1483, 138180), (1645, 124572), (1974, 103810), (2303, 88980), (2820, 72667), (2940, 69701), (2966, 69090), (3290, 62286), (3948, 51905), (4449, 46060), (4606, 44490), (4935, 41524), (5932, 34545), (6580, 31143), (6909, 29660), (7415, 27636), (8898, 23030), (9212, 22245), (9870, 20762), (10381, 19740), (11515, 17796), (13818, 14830)]