28936720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21277}}^1$

素因数の和:21307

約数の個数: 40

約数和(自身を含む): 71238744

約数和(自身を除く): 42302024

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 21277, 42554, 85108, 106385, 170216, 212770, 340432, 361709, 425540, 723418, 851080, 1446836, 1702160, 1808545, 2893672, 3617090, 5787344, 7234180, 14468360, 28936720]

約数ペア:

[(1, 28936720), (2, 14468360), (4, 7234180), (5, 5787344), (8, 3617090), (10, 2893672), (16, 1808545), (17, 1702160), (20, 1446836), (34, 851080), (40, 723418), (68, 425540), (80, 361709), (85, 340432), (136, 212770), (170, 170216), (272, 106385), (340, 85108), (680, 42554), (1360, 21277)]