18311800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7043}}^1$

素因数の和:7072

約数の個数: 48

約数和(自身を含む): 45856440

約数和(自身を除く): 27544640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7043, 14086, 28172, 35215, 56344, 70430, 91559, 140860, 176075, 183118, 281720, 352150, 366236, 457795, 704300, 732472, 915590, 1408600, 1831180, 2288975, 3662360, 4577950, 9155900, 18311800]

約数ペア:

[(1, 18311800), (2, 9155900), (4, 4577950), (5, 3662360), (8, 2288975), (10, 1831180), (13, 1408600), (20, 915590), (25, 732472), (26, 704300), (40, 457795), (50, 366236), (52, 352150), (65, 281720), (100, 183118), (104, 176075), (130, 140860), (200, 91559), (260, 70430), (325, 56344), (520, 35215), (650, 28172), (1300, 14086), (2600, 7043)]