18836840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1381}}^1$

素因数の和:1434

約数の個数: 64

約数和(自身を含む): 47761920

約数和(自身を除く): 28925080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1381, 1705, 2728, 2762, 3410, 5524, 6820, 6905, 11048, 13640, 13810, 15191, 27620, 30382, 42811, 55240, 60764, 75955, 85622, 121528, 151910, 171244, 214055, 303820, 342488, 428110, 470921, 607640, 856220, 941842, 1712440, 1883684, 2354605, 3767368, 4709210, 9418420, 18836840]

約数ペア:

[(1, 18836840), (2, 9418420), (4, 4709210), (5, 3767368), (8, 2354605), (10, 1883684), (11, 1712440), (20, 941842), (22, 856220), (31, 607640), (40, 470921), (44, 428110), (55, 342488), (62, 303820), (88, 214055), (110, 171244), (124, 151910), (155, 121528), (220, 85622), (248, 75955), (310, 60764), (341, 55240), (440, 42811), (620, 30382), (682, 27620), (1240, 15191), (1364, 13810), (1381, 13640), (1705, 11048), (2728, 6905), (2762, 6820), (3410, 5524)]