21390552

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{12917}}^1$

素因数の和:12952

約数の個数: 48

約数和(自身を含む): 60456240

約数和(自身を除く): 39065688

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656, 12917, 25834, 38751, 51668, 77502, 103336, 116253, 155004, 232506, 297091, 310008, 465012, 594182, 891273, 930024, 1188364, 1782546, 2376728, 2673819, 3565092, 5347638, 7130184, 10695276, 21390552]

約数ペア:

[(1, 21390552), (2, 10695276), (3, 7130184), (4, 5347638), (6, 3565092), (8, 2673819), (9, 2376728), (12, 1782546), (18, 1188364), (23, 930024), (24, 891273), (36, 594182), (46, 465012), (69, 310008), (72, 297091), (92, 232506), (138, 155004), (184, 116253), (207, 103336), (276, 77502), (414, 51668), (552, 38751), (828, 25834), (1656, 12917)]