20178520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16273}}^1$

素因数の和:16315

約数の個数: 32

約数和(自身を含む): 46869120

約数和(自身を除く): 26690600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16273, 32546, 65092, 81365, 130184, 162730, 325460, 504463, 650920, 1008926, 2017852, 2522315, 4035704, 5044630, 10089260, 20178520]

約数ペア:

[(1, 20178520), (2, 10089260), (4, 5044630), (5, 4035704), (8, 2522315), (10, 2017852), (20, 1008926), (31, 650920), (40, 504463), (62, 325460), (124, 162730), (155, 130184), (248, 81365), (310, 65092), (620, 32546), (1240, 16273)]