258536740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{827}}^1$

素因数の和:890

約数の個数: 144

約数和(自身を含む): 713603520

約数和(自身を除く): 455066780

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 49, 55, 58, 70, 77, 98, 110, 116, 140, 145, 154, 196, 203, 220, 245, 290, 308, 319, 385, 406, 490, 539, 580, 638, 770, 812, 827, 980, 1015, 1078, 1276, 1421, 1540, 1595, 1654, 2030, 2156, 2233, 2695, 2842, 3190, 3308, 4060, 4135, 4466, 5390, 5684, 5789, 6380, 7105, 8270, 8932, 9097, 10780, 11165, 11578, 14210, 15631, 16540, 18194, 22330, 23156, 23983, 28420, 28945, 31262, 36388, 40523, 44660, 45485, 47966, 57890, 62524, 63679, 78155, 81046, 90970, 95932, 115780, 119915, 127358, 156310, 162092, 167881, 181940, 202615, 239830, 254716, 263813, 312620, 318395, 335762, 405230, 445753, 479660, 527626, 636790, 671524, 810460, 839405, 891506, 1055252, 1175167, 1273580, 1319065, 1678810, 1783012, 1846691, 2228765, 2350334, 2638130, 3357620, 3693382, 4457530, 4700668, 5276260, 5875835, 7386764, 8915060, 9233455, 11751670, 12926837, 18466910, 23503340, 25853674, 36933820, 51707348, 64634185, 129268370, 258536740]

約数ペア:

[(1, 258536740), (2, 129268370), (4, 64634185), (5, 51707348), (7, 36933820), (10, 25853674), (11, 23503340), (14, 18466910), (20, 12926837), (22, 11751670), (28, 9233455), (29, 8915060), (35, 7386764), (44, 5875835), (49, 5276260), (55, 4700668), (58, 4457530), (70, 3693382), (77, 3357620), (98, 2638130), (110, 2350334), (116, 2228765), (140, 1846691), (145, 1783012), (154, 1678810), (196, 1319065), (203, 1273580), (220, 1175167), (245, 1055252), (290, 891506), (308, 839405), (319, 810460), (385, 671524), (406, 636790), (490, 527626), (539, 479660), (580, 445753), (638, 405230), (770, 335762), (812, 318395), (827, 312620), (980, 263813), (1015, 254716), (1078, 239830), (1276, 202615), (1421, 181940), (1540, 167881), (1595, 162092), (1654, 156310), (2030, 127358), (2156, 119915), (2233, 115780), (2695, 95932), (2842, 90970), (3190, 81046), (3308, 78155), (4060, 63679), (4135, 62524), (4466, 57890), (5390, 47966), (5684, 45485), (5789, 44660), (6380, 40523), (7105, 36388), (8270, 31262), (8932, 28945), (9097, 28420), (10780, 23983), (11165, 23156), (11578, 22330), (14210, 18194), (15631, 16540)]