21150896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1667}}^1$

素因数の和:1749

約数の個数: 40

約数和(自身を含む): 44882544

約数和(自身を除く): 23731648

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 1667, 3172, 3334, 6344, 6668, 12688, 13336, 21671, 26672, 43342, 86684, 101687, 173368, 203374, 346736, 406748, 813496, 1321931, 1626992, 2643862, 5287724, 10575448, 21150896]

約数ペア:

[(1, 21150896), (2, 10575448), (4, 5287724), (8, 2643862), (13, 1626992), (16, 1321931), (26, 813496), (52, 406748), (61, 346736), (104, 203374), (122, 173368), (208, 101687), (244, 86684), (488, 43342), (793, 26672), (976, 21671), (1586, 13336), (1667, 12688), (3172, 6668), (3334, 6344)]