21539180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2239}}^1$

素因数の和:2298

約数の個数: 48

約数和(自身を含む): 50050560

約数和(自身を除く): 28511380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2239, 2405, 4478, 4810, 8956, 9620, 11195, 22390, 29107, 44780, 58214, 82843, 116428, 145535, 165686, 291070, 331372, 414215, 582140, 828430, 1076959, 1656860, 2153918, 4307836, 5384795, 10769590, 21539180]

約数ペア:

[(1, 21539180), (2, 10769590), (4, 5384795), (5, 4307836), (10, 2153918), (13, 1656860), (20, 1076959), (26, 828430), (37, 582140), (52, 414215), (65, 331372), (74, 291070), (130, 165686), (148, 145535), (185, 116428), (260, 82843), (370, 58214), (481, 44780), (740, 29107), (962, 22390), (1924, 11195), (2239, 9620), (2405, 8956), (4478, 4810)]