19903240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2293}}^1$

素因数の和:2342

約数の個数: 64

約数和(自身を含む): 52853760

約数和(自身を除く): 32950520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2293, 4340, 4586, 8680, 9172, 11465, 16051, 18344, 22930, 32102, 45860, 64204, 71083, 80255, 91720, 128408, 142166, 160510, 284332, 321020, 355415, 497581, 568664, 642040, 710830, 995162, 1421660, 1990324, 2487905, 2843320, 3980648, 4975810, 9951620, 19903240]

約数ペア:

[(1, 19903240), (2, 9951620), (4, 4975810), (5, 3980648), (7, 2843320), (8, 2487905), (10, 1990324), (14, 1421660), (20, 995162), (28, 710830), (31, 642040), (35, 568664), (40, 497581), (56, 355415), (62, 321020), (70, 284332), (124, 160510), (140, 142166), (155, 128408), (217, 91720), (248, 80255), (280, 71083), (310, 64204), (434, 45860), (620, 32102), (868, 22930), (1085, 18344), (1240, 16051), (1736, 11465), (2170, 9172), (2293, 8680), (4340, 4586)]