18840560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 46282752

約数和(自身を除く): 27442192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 107, 124, 142, 155, 214, 248, 284, 310, 355, 428, 496, 535, 568, 620, 710, 856, 1070, 1136, 1240, 1420, 1712, 2140, 2201, 2480, 2840, 3317, 4280, 4402, 5680, 6634, 7597, 8560, 8804, 11005, 13268, 15194, 16585, 17608, 22010, 26536, 30388, 33170, 35216, 37985, 44020, 53072, 60776, 66340, 75970, 88040, 121552, 132680, 151940, 176080, 235507, 265360, 303880, 471014, 607760, 942028, 1177535, 1884056, 2355070, 3768112, 4710140, 9420280, 18840560]

約数ペア:

[(1, 18840560), (2, 9420280), (4, 4710140), (5, 3768112), (8, 2355070), (10, 1884056), (16, 1177535), (20, 942028), (31, 607760), (40, 471014), (62, 303880), (71, 265360), (80, 235507), (107, 176080), (124, 151940), (142, 132680), (155, 121552), (214, 88040), (248, 75970), (284, 66340), (310, 60776), (355, 53072), (428, 44020), (496, 37985), (535, 35216), (568, 33170), (620, 30388), (710, 26536), (856, 22010), (1070, 17608), (1136, 16585), (1240, 15194), (1420, 13268), (1712, 11005), (2140, 8804), (2201, 8560), (2480, 7597), (2840, 6634), (3317, 5680), (4280, 4402)]