18125080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 25005800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 311, 376, 470, 620, 622, 940, 1240, 1244, 1457, 1555, 1880, 2488, 2914, 3110, 5828, 6220, 7285, 9641, 11656, 12440, 14570, 14617, 19282, 29140, 29234, 38564, 48205, 58280, 58468, 73085, 77128, 96410, 116936, 146170, 192820, 292340, 385640, 453127, 584680, 906254, 1812508, 2265635, 3625016, 4531270, 9062540, 18125080]

約数ペア:

[(1, 18125080), (2, 9062540), (4, 4531270), (5, 3625016), (8, 2265635), (10, 1812508), (20, 906254), (31, 584680), (40, 453127), (47, 385640), (62, 292340), (94, 192820), (124, 146170), (155, 116936), (188, 96410), (235, 77128), (248, 73085), (310, 58468), (311, 58280), (376, 48205), (470, 38564), (620, 29234), (622, 29140), (940, 19282), (1240, 14617), (1244, 14570), (1457, 12440), (1555, 11656), (1880, 9641), (2488, 7285), (2914, 6220), (3110, 5828)]