21695872

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{811}}^1$

素因数の和:855

約数の個数: 64

約数和(自身を含む): 49694400

約数和(自身を除く): 27998528

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 128, 152, 176, 209, 304, 352, 418, 608, 704, 811, 836, 1216, 1408, 1622, 1672, 2432, 3244, 3344, 6488, 6688, 8921, 12976, 13376, 15409, 17842, 25952, 26752, 30818, 35684, 51904, 61636, 71368, 103808, 123272, 142736, 169499, 246544, 285472, 338998, 493088, 570944, 677996, 986176, 1141888, 1355992, 1972352, 2711984, 5423968, 10847936, 21695872]

約数ペア:

[(1, 21695872), (2, 10847936), (4, 5423968), (8, 2711984), (11, 1972352), (16, 1355992), (19, 1141888), (22, 986176), (32, 677996), (38, 570944), (44, 493088), (64, 338998), (76, 285472), (88, 246544), (128, 169499), (152, 142736), (176, 123272), (209, 103808), (304, 71368), (352, 61636), (418, 51904), (608, 35684), (704, 30818), (811, 26752), (836, 25952), (1216, 17842), (1408, 15409), (1622, 13376), (1672, 12976), (2432, 8921), (3244, 6688), (3344, 6488)]