17981260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^2$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 43226064

約数和(自身を除く): 25244804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 47, 55, 74, 94, 110, 148, 185, 188, 220, 235, 370, 407, 470, 517, 740, 814, 940, 1034, 1628, 1739, 2035, 2068, 2209, 2585, 3478, 4070, 4418, 5170, 6956, 8140, 8695, 8836, 10340, 11045, 17390, 19129, 22090, 24299, 34780, 38258, 44180, 48598, 76516, 81733, 95645, 97196, 121495, 163466, 191290, 242990, 326932, 382580, 408665, 485980, 817330, 899063, 1634660, 1798126, 3596252, 4495315, 8990630, 17981260]

約数ペア:

[(1, 17981260), (2, 8990630), (4, 4495315), (5, 3596252), (10, 1798126), (11, 1634660), (20, 899063), (22, 817330), (37, 485980), (44, 408665), (47, 382580), (55, 326932), (74, 242990), (94, 191290), (110, 163466), (148, 121495), (185, 97196), (188, 95645), (220, 81733), (235, 76516), (370, 48598), (407, 44180), (470, 38258), (517, 34780), (740, 24299), (814, 22090), (940, 19129), (1034, 17390), (1628, 11045), (1739, 10340), (2035, 8836), (2068, 8695), (2209, 8140), (2585, 6956), (3478, 5170), (4070, 4418)]