21238156780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1\times {\mathrm{1951}}^1$

素因数の和:2395

約数の個数: 96

約数和(自身を含む): 47866194432

約数和(自身を除く): 26628037652

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 101, 170, 202, 317, 340, 404, 505, 634, 1010, 1268, 1585, 1717, 1951, 2020, 3170, 3434, 3902, 5389, 6340, 6868, 7804, 8585, 9755, 10778, 17170, 19510, 21556, 26945, 32017, 33167, 34340, 39020, 53890, 64034, 66334, 107780, 128068, 132668, 160085, 165835, 197051, 320170, 331670, 394102, 544289, 618467, 640340, 663340, 788204, 985255, 1088578, 1236934, 1970510, 2177156, 2473868, 2721445, 3092335, 3349867, 3941020, 5442890, 6184670, 6699734, 10513939, 10885780, 12369340, 13399468, 16749335, 21027878, 33498670, 42055756, 52569695, 62465167, 66997340, 105139390, 124930334, 210278780, 249860668, 312325835, 624651670, 1061907839, 1249303340, 2123815678, 4247631356, 5309539195, 10619078390, 21238156780]

約数ペア:

[(1, 21238156780), (2, 10619078390), (4, 5309539195), (5, 4247631356), (10, 2123815678), (17, 1249303340), (20, 1061907839), (34, 624651670), (68, 312325835), (85, 249860668), (101, 210278780), (170, 124930334), (202, 105139390), (317, 66997340), (340, 62465167), (404, 52569695), (505, 42055756), (634, 33498670), (1010, 21027878), (1268, 16749335), (1585, 13399468), (1717, 12369340), (1951, 10885780), (2020, 10513939), (3170, 6699734), (3434, 6184670), (3902, 5442890), (5389, 3941020), (6340, 3349867), (6868, 3092335), (7804, 2721445), (8585, 2473868), (9755, 2177156), (10778, 1970510), (17170, 1236934), (19510, 1088578), (21556, 985255), (26945, 788204), (32017, 663340), (33167, 640340), (34340, 618467), (39020, 544289), (53890, 394102), (64034, 331670), (66334, 320170), (107780, 197051), (128068, 165835), (132668, 160085)]