16890040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 40124160

約数和(自身を除く): 23234120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 62, 106, 124, 155, 212, 248, 257, 265, 310, 424, 514, 530, 620, 1028, 1060, 1240, 1285, 1643, 2056, 2120, 2570, 3286, 5140, 6572, 7967, 8215, 10280, 13144, 13621, 15934, 16430, 27242, 31868, 32860, 39835, 54484, 63736, 65720, 68105, 79670, 108968, 136210, 159340, 272420, 318680, 422251, 544840, 844502, 1689004, 2111255, 3378008, 4222510, 8445020, 16890040]

約数ペア:

[(1, 16890040), (2, 8445020), (4, 4222510), (5, 3378008), (8, 2111255), (10, 1689004), (20, 844502), (31, 544840), (40, 422251), (53, 318680), (62, 272420), (106, 159340), (124, 136210), (155, 108968), (212, 79670), (248, 68105), (257, 65720), (265, 63736), (310, 54484), (424, 39835), (514, 32860), (530, 31868), (620, 27242), (1028, 16430), (1060, 15934), (1240, 13621), (1285, 13144), (1643, 10280), (2056, 8215), (2120, 7967), (2570, 6572), (3286, 5140)]