28206880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:290

約数の個数: 96

約数和(自身を含む): 73156608

約数和(自身を除く): 44949728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 71, 80, 104, 130, 142, 160, 191, 208, 260, 284, 355, 382, 416, 520, 568, 710, 764, 923, 955, 1040, 1136, 1420, 1528, 1846, 1910, 2080, 2272, 2483, 2840, 3056, 3692, 3820, 4615, 4966, 5680, 6112, 7384, 7640, 9230, 9932, 11360, 12415, 13561, 14768, 15280, 18460, 19864, 24830, 27122, 29536, 30560, 36920, 39728, 49660, 54244, 67805, 73840, 79456, 99320, 108488, 135610, 147680, 176293, 198640, 216976, 271220, 352586, 397280, 433952, 542440, 705172, 881465, 1084880, 1410344, 1762930, 2169760, 2820688, 3525860, 5641376, 7051720, 14103440, 28206880]

約数ペア:

[(1, 28206880), (2, 14103440), (4, 7051720), (5, 5641376), (8, 3525860), (10, 2820688), (13, 2169760), (16, 1762930), (20, 1410344), (26, 1084880), (32, 881465), (40, 705172), (52, 542440), (65, 433952), (71, 397280), (80, 352586), (104, 271220), (130, 216976), (142, 198640), (160, 176293), (191, 147680), (208, 135610), (260, 108488), (284, 99320), (355, 79456), (382, 73840), (416, 67805), (520, 54244), (568, 49660), (710, 39728), (764, 36920), (923, 30560), (955, 29536), (1040, 27122), (1136, 24830), (1420, 19864), (1528, 18460), (1846, 15280), (1910, 14768), (2080, 13561), (2272, 12415), (2483, 11360), (2840, 9932), (3056, 9230), (3692, 7640), (3820, 7384), (4615, 6112), (4966, 5680)]