18575960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 45511200

約数和(自身を除く): 26935240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 257, 260, 278, 514, 520, 556, 695, 1028, 1112, 1285, 1390, 1807, 2056, 2570, 2780, 3341, 3614, 5140, 5560, 6682, 7228, 9035, 10280, 13364, 14456, 16705, 18070, 26728, 33410, 35723, 36140, 66820, 71446, 72280, 133640, 142892, 178615, 285784, 357230, 464399, 714460, 928798, 1428920, 1857596, 2321995, 3715192, 4643990, 9287980, 18575960]

約数ペア:

[(1, 18575960), (2, 9287980), (4, 4643990), (5, 3715192), (8, 2321995), (10, 1857596), (13, 1428920), (20, 928798), (26, 714460), (40, 464399), (52, 357230), (65, 285784), (104, 178615), (130, 142892), (139, 133640), (257, 72280), (260, 71446), (278, 66820), (514, 36140), (520, 35723), (556, 33410), (695, 26728), (1028, 18070), (1112, 16705), (1285, 14456), (1390, 13364), (1807, 10280), (2056, 9035), (2570, 7228), (2780, 6682), (3341, 5560), (3614, 5140)]