21140240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24023}}^1$

素因数の和:24047

約数の個数: 40

約数和(自身を含む): 53621568

約数和(自身を除く): 32481328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24023, 48046, 96092, 120115, 192184, 240230, 264253, 384368, 480460, 528506, 960920, 1057012, 1321265, 1921840, 2114024, 2642530, 4228048, 5285060, 10570120, 21140240]

約数ペア:

[(1, 21140240), (2, 10570120), (4, 5285060), (5, 4228048), (8, 2642530), (10, 2114024), (11, 1921840), (16, 1321265), (20, 1057012), (22, 960920), (40, 528506), (44, 480460), (55, 384368), (80, 264253), (88, 240230), (110, 192184), (176, 120115), (220, 96092), (440, 48046), (880, 24023)]