1804820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 4064256

約数和(自身を除く): 2259436

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 71, 82, 124, 142, 155, 164, 205, 284, 310, 355, 410, 620, 710, 820, 1271, 1420, 2201, 2542, 2911, 4402, 5084, 5822, 6355, 8804, 11005, 11644, 12710, 14555, 22010, 25420, 29110, 44020, 58220, 90241, 180482, 360964, 451205, 902410, 1804820]

約数ペア:

[(1, 1804820), (2, 902410), (4, 451205), (5, 360964), (10, 180482), (20, 90241), (31, 58220), (41, 44020), (62, 29110), (71, 25420), (82, 22010), (124, 14555), (142, 12710), (155, 11644), (164, 11005), (205, 8804), (284, 6355), (310, 5822), (355, 5084), (410, 4402), (620, 2911), (710, 2542), (820, 2201), (1271, 1420)]