18317140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 42245280

約数和(自身を除く): 23928140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 59, 76, 86, 95, 118, 172, 190, 215, 236, 295, 361, 380, 430, 590, 722, 817, 860, 1121, 1180, 1444, 1634, 1805, 2242, 2537, 3268, 3610, 4085, 4484, 5074, 5605, 7220, 8170, 10148, 11210, 12685, 15523, 16340, 21299, 22420, 25370, 31046, 42598, 48203, 50740, 62092, 77615, 85196, 96406, 106495, 155230, 192812, 212990, 241015, 310460, 425980, 482030, 915857, 964060, 1831714, 3663428, 4579285, 9158570, 18317140]

約数ペア:

[(1, 18317140), (2, 9158570), (4, 4579285), (5, 3663428), (10, 1831714), (19, 964060), (20, 915857), (38, 482030), (43, 425980), (59, 310460), (76, 241015), (86, 212990), (95, 192812), (118, 155230), (172, 106495), (190, 96406), (215, 85196), (236, 77615), (295, 62092), (361, 50740), (380, 48203), (430, 42598), (590, 31046), (722, 25370), (817, 22420), (860, 21299), (1121, 16340), (1180, 15523), (1444, 12685), (1634, 11210), (1805, 10148), (2242, 8170), (2537, 7220), (3268, 5605), (3610, 5074), (4085, 4484)]