21000529216

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{138863}}^1$

素因数の和:139031

約数の個数: 56

約数和(自身を含む): 44442034560

約数和(自身を除く): 23441505344

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 136, 139, 272, 278, 544, 556, 1088, 1112, 2224, 2363, 4448, 4726, 8896, 9452, 18904, 37808, 75616, 138863, 151232, 277726, 555452, 1110904, 2221808, 2360671, 4443616, 4721342, 8887232, 9442684, 18885368, 19301957, 37770736, 38603914, 75541472, 77207828, 151082944, 154415656, 308831312, 328133269, 617662624, 656266538, 1235325248, 1312533076, 2625066152, 5250132304, 10500264608, 21000529216]

約数ペア:

[(1, 21000529216), (2, 10500264608), (4, 5250132304), (8, 2625066152), (16, 1312533076), (17, 1235325248), (32, 656266538), (34, 617662624), (64, 328133269), (68, 308831312), (136, 154415656), (139, 151082944), (272, 77207828), (278, 75541472), (544, 38603914), (556, 37770736), (1088, 19301957), (1112, 18885368), (2224, 9442684), (2363, 8887232), (4448, 4721342), (4726, 4443616), (8896, 2360671), (9452, 2221808), (18904, 1110904), (37808, 555452), (75616, 277726), (138863, 151232)]