19008620

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 22268980

約数列:

[1, 2, 4, 5, 10, 20, 59, 89, 118, 178, 181, 236, 295, 356, 362, 445, 590, 724, 890, 905, 1180, 1780, 1810, 3620, 5251, 10502, 10679, 16109, 21004, 21358, 26255, 32218, 42716, 52510, 53395, 64436, 80545, 105020, 106790, 161090, 213580, 322180, 950431, 1900862, 3801724, 4752155, 9504310, 19008620]

約数ペア:

[(1, 19008620), (2, 9504310), (4, 4752155), (5, 3801724), (10, 1900862), (20, 950431), (59, 322180), (89, 213580), (118, 161090), (178, 106790), (181, 105020), (236, 80545), (295, 64436), (356, 53395), (362, 52510), (445, 42716), (590, 32218), (724, 26255), (890, 21358), (905, 21004), (1180, 16109), (1780, 10679), (1810, 10502), (3620, 5251)]