18439020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1151}}^1$

素因数の和:1255

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 38170260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1151, 1335, 1602, 1780, 2302, 2670, 3204, 3453, 4005, 4604, 5340, 5755, 6906, 8010, 10359, 11510, 13812, 16020, 17265, 20718, 23020, 34530, 41436, 51795, 69060, 102439, 103590, 204878, 207180, 307317, 409756, 512195, 614634, 921951, 1024390, 1229268, 1536585, 1843902, 2048780, 3073170, 3687804, 4609755, 6146340, 9219510, 18439020]

約数ペア:

[(1, 18439020), (2, 9219510), (3, 6146340), (4, 4609755), (5, 3687804), (6, 3073170), (9, 2048780), (10, 1843902), (12, 1536585), (15, 1229268), (18, 1024390), (20, 921951), (30, 614634), (36, 512195), (45, 409756), (60, 307317), (89, 207180), (90, 204878), (178, 103590), (180, 102439), (267, 69060), (356, 51795), (445, 41436), (534, 34530), (801, 23020), (890, 20718), (1068, 17265), (1151, 16020), (1335, 13812), (1602, 11510), (1780, 10359), (2302, 8010), (2670, 6906), (3204, 5755), (3453, 5340), (4005, 4604)]