20939890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{503}}^1$

素因数の和:714

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18686606

約数列:

[1, 2, 5, 10, 23, 46, 115, 181, 230, 362, 503, 905, 1006, 1810, 2515, 4163, 5030, 8326, 11569, 20815, 23138, 41630, 57845, 91043, 115690, 182086, 455215, 910430, 2093989, 4187978, 10469945, 20939890]

約数ペア:

[(1, 20939890), (2, 10469945), (5, 4187978), (10, 2093989), (23, 910430), (46, 455215), (115, 182086), (181, 115690), (230, 91043), (362, 57845), (503, 41630), (905, 23138), (1006, 20815), (1810, 11569), (2515, 8326), (4163, 5030)]