156912520

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{21673}}^1$

素因数の和:21865

約数の個数: 32

約数和(自身を含む): 355020120

約数和(自身を除く): 198107600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 21673, 43346, 86692, 108365, 173384, 216730, 433460, 866920, 3922813, 7845626, 15691252, 19614065, 31382504, 39228130, 78456260, 156912520]

約数ペア:

[(1, 156912520), (2, 78456260), (4, 39228130), (5, 31382504), (8, 19614065), (10, 15691252), (20, 7845626), (40, 3922813), (181, 866920), (362, 433460), (724, 216730), (905, 173384), (1448, 108365), (1810, 86692), (3620, 43346), (7240, 21673)]