20983590

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 39842010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 31, 45, 46, 54, 62, 69, 90, 93, 109, 115, 135, 138, 155, 186, 207, 218, 230, 270, 279, 310, 327, 345, 414, 465, 545, 558, 621, 654, 690, 713, 837, 930, 981, 1035, 1090, 1242, 1395, 1426, 1635, 1674, 1962, 2070, 2139, 2507, 2790, 2943, 3105, 3270, 3379, 3565, 4185, 4278, 4905, 5014, 5886, 6210, 6417, 6758, 7130, 7521, 8370, 9810, 10137, 10695, 12535, 12834, 14715, 15042, 16895, 19251, 20274, 21390, 22563, 25070, 29430, 30411, 32085, 33790, 37605, 38502, 45126, 50685, 60822, 64170, 67689, 75210, 77717, 91233, 96255, 101370, 112815, 135378, 152055, 155434, 182466, 192510, 225630, 233151, 304110, 338445, 388585, 456165, 466302, 676890, 699453, 777170, 912330, 1165755, 1398906, 2098359, 2331510, 3497265, 4196718, 6994530, 10491795, 20983590]

約数ペア:

[(1, 20983590), (2, 10491795), (3, 6994530), (5, 4196718), (6, 3497265), (9, 2331510), (10, 2098359), (15, 1398906), (18, 1165755), (23, 912330), (27, 777170), (30, 699453), (31, 676890), (45, 466302), (46, 456165), (54, 388585), (62, 338445), (69, 304110), (90, 233151), (93, 225630), (109, 192510), (115, 182466), (135, 155434), (138, 152055), (155, 135378), (186, 112815), (207, 101370), (218, 96255), (230, 91233), (270, 77717), (279, 75210), (310, 67689), (327, 64170), (345, 60822), (414, 50685), (465, 45126), (545, 38502), (558, 37605), (621, 33790), (654, 32085), (690, 30411), (713, 29430), (837, 25070), (930, 22563), (981, 21390), (1035, 20274), (1090, 19251), (1242, 16895), (1395, 15042), (1426, 14715), (1635, 12834), (1674, 12535), (1962, 10695), (2070, 10137), (2139, 9810), (2507, 8370), (2790, 7521), (2943, 7130), (3105, 6758), (3270, 6417), (3379, 6210), (3565, 5886), (4185, 5014), (4278, 4905)]