18158920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{743}}^1$

素因数の和:814

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 26838200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 743, 940, 1222, 1486, 1880, 2444, 2972, 3055, 3715, 4888, 5944, 6110, 7430, 9659, 12220, 14860, 19318, 24440, 29720, 34921, 38636, 48295, 69842, 77272, 96590, 139684, 174605, 193180, 279368, 349210, 386360, 453973, 698420, 907946, 1396840, 1815892, 2269865, 3631784, 4539730, 9079460, 18158920]

約数ペア:

[(1, 18158920), (2, 9079460), (4, 4539730), (5, 3631784), (8, 2269865), (10, 1815892), (13, 1396840), (20, 907946), (26, 698420), (40, 453973), (47, 386360), (52, 349210), (65, 279368), (94, 193180), (104, 174605), (130, 139684), (188, 96590), (235, 77272), (260, 69842), (376, 48295), (470, 38636), (520, 34921), (611, 29720), (743, 24440), (940, 19318), (1222, 14860), (1486, 12220), (1880, 9659), (2444, 7430), (2972, 6110), (3055, 5944), (3715, 4888)]