257428360

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:708

約数の個数: 128

約数和(自身を含む): 699840000

約数和(自身を除く): 442411640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 196, 203, 232, 245, 280, 290, 343, 392, 406, 490, 580, 647, 686, 812, 980, 1015, 1160, 1294, 1372, 1421, 1624, 1715, 1960, 2030, 2588, 2744, 2842, 3235, 3430, 4060, 4529, 5176, 5684, 6470, 6860, 7105, 8120, 9058, 9947, 11368, 12940, 13720, 14210, 18116, 18763, 19894, 22645, 25880, 28420, 31703, 36232, 37526, 39788, 45290, 49735, 56840, 63406, 75052, 79576, 90580, 93815, 99470, 126812, 131341, 150104, 158515, 181160, 187630, 198940, 221921, 253624, 262682, 317030, 375260, 397880, 443842, 525364, 634060, 656705, 750520, 887684, 919387, 1050728, 1109605, 1268120, 1313410, 1775368, 1838774, 2219210, 2626820, 3677548, 4438420, 4596935, 5253640, 6435709, 7355096, 8876840, 9193870, 12871418, 18387740, 25742836, 32178545, 36775480, 51485672, 64357090, 128714180, 257428360]

約数ペア:

[(1, 257428360), (2, 128714180), (4, 64357090), (5, 51485672), (7, 36775480), (8, 32178545), (10, 25742836), (14, 18387740), (20, 12871418), (28, 9193870), (29, 8876840), (35, 7355096), (40, 6435709), (49, 5253640), (56, 4596935), (58, 4438420), (70, 3677548), (98, 2626820), (116, 2219210), (140, 1838774), (145, 1775368), (196, 1313410), (203, 1268120), (232, 1109605), (245, 1050728), (280, 919387), (290, 887684), (343, 750520), (392, 656705), (406, 634060), (490, 525364), (580, 443842), (647, 397880), (686, 375260), (812, 317030), (980, 262682), (1015, 253624), (1160, 221921), (1294, 198940), (1372, 187630), (1421, 181160), (1624, 158515), (1715, 150104), (1960, 131341), (2030, 126812), (2588, 99470), (2744, 93815), (2842, 90580), (3235, 79576), (3430, 75052), (4060, 63406), (4529, 56840), (5176, 49735), (5684, 45290), (6470, 39788), (6860, 37526), (7105, 36232), (8120, 31703), (9058, 28420), (9947, 25880), (11368, 22645), (12940, 19894), (13720, 18763), (14210, 18116)]