18103580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 26893540

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 61, 71, 76, 95, 110, 122, 142, 190, 209, 220, 244, 284, 305, 355, 380, 418, 610, 671, 710, 781, 836, 1045, 1159, 1220, 1342, 1349, 1420, 1562, 2090, 2318, 2684, 2698, 3124, 3355, 3905, 4180, 4331, 4636, 5396, 5795, 6710, 6745, 7810, 8662, 11590, 12749, 13420, 13490, 14839, 15620, 17324, 21655, 23180, 25498, 26980, 29678, 43310, 47641, 50996, 59356, 63745, 74195, 82289, 86620, 95282, 127490, 148390, 164578, 190564, 238205, 254980, 296780, 329156, 411445, 476410, 822890, 905179, 952820, 1645780, 1810358, 3620716, 4525895, 9051790, 18103580]

約数ペア:

[(1, 18103580), (2, 9051790), (4, 4525895), (5, 3620716), (10, 1810358), (11, 1645780), (19, 952820), (20, 905179), (22, 822890), (38, 476410), (44, 411445), (55, 329156), (61, 296780), (71, 254980), (76, 238205), (95, 190564), (110, 164578), (122, 148390), (142, 127490), (190, 95282), (209, 86620), (220, 82289), (244, 74195), (284, 63745), (305, 59356), (355, 50996), (380, 47641), (418, 43310), (610, 29678), (671, 26980), (710, 25498), (781, 23180), (836, 21655), (1045, 17324), (1159, 15620), (1220, 14839), (1342, 13490), (1349, 13420), (1420, 12749), (1562, 11590), (2090, 8662), (2318, 7810), (2684, 6745), (2698, 6710), (3124, 5795), (3355, 5396), (3905, 4636), (4180, 4331)]