181261780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{26423}}^1$

素因数の和:26453

約数の個数: 48

約数和(自身を含む): 443923200

約数和(自身を除く): 262661420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 26423, 52846, 105692, 132115, 184961, 264230, 369922, 528460, 739844, 924805, 1294727, 1849610, 2589454, 3699220, 5178908, 6473635, 9063089, 12947270, 18126178, 25894540, 36252356, 45315445, 90630890, 181261780]

約数ペア:

[(1, 181261780), (2, 90630890), (4, 45315445), (5, 36252356), (7, 25894540), (10, 18126178), (14, 12947270), (20, 9063089), (28, 6473635), (35, 5178908), (49, 3699220), (70, 2589454), (98, 1849610), (140, 1294727), (196, 924805), (245, 739844), (343, 528460), (490, 369922), (686, 264230), (980, 184961), (1372, 132115), (1715, 105692), (3430, 52846), (6860, 26423)]