215821970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1993}}^1$

素因数の和:2044

約数の個数: 96

約数和(自身を含む): 515552688

約数和(自身を除く): 299730718

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 49, 65, 70, 85, 91, 98, 119, 130, 170, 182, 221, 238, 245, 442, 455, 490, 595, 637, 833, 910, 1105, 1190, 1274, 1547, 1666, 1993, 2210, 3094, 3185, 3986, 4165, 6370, 7735, 8330, 9965, 10829, 13951, 15470, 19930, 21658, 25909, 27902, 33881, 51818, 54145, 67762, 69755, 97657, 108290, 129545, 139510, 169405, 181363, 195314, 237167, 259090, 338810, 362726, 440453, 474334, 488285, 880906, 906815, 976570, 1185835, 1269541, 1660169, 1813630, 2202265, 2371670, 2539082, 3083171, 3320338, 4404530, 6166342, 6347705, 8300845, 12695410, 15415855, 16601690, 21582197, 30831710, 43164394, 107910985, 215821970]

約数ペア:

[(1, 215821970), (2, 107910985), (5, 43164394), (7, 30831710), (10, 21582197), (13, 16601690), (14, 15415855), (17, 12695410), (26, 8300845), (34, 6347705), (35, 6166342), (49, 4404530), (65, 3320338), (70, 3083171), (85, 2539082), (91, 2371670), (98, 2202265), (119, 1813630), (130, 1660169), (170, 1269541), (182, 1185835), (221, 976570), (238, 906815), (245, 880906), (442, 488285), (455, 474334), (490, 440453), (595, 362726), (637, 338810), (833, 259090), (910, 237167), (1105, 195314), (1190, 181363), (1274, 169405), (1547, 139510), (1666, 129545), (1993, 108290), (2210, 97657), (3094, 69755), (3185, 67762), (3986, 54145), (4165, 51818), (6370, 33881), (7735, 27902), (8330, 25909), (9965, 21658), (10829, 19930), (13951, 15470)]