19278280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2221}}^1$

素因数の和:2270

約数の個数: 64

約数和(自身を含む): 51194880

約数和(自身を除く): 31916600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2221, 4340, 4442, 8680, 8884, 11105, 15547, 17768, 22210, 31094, 44420, 62188, 68851, 77735, 88840, 124376, 137702, 155470, 275404, 310940, 344255, 481957, 550808, 621880, 688510, 963914, 1377020, 1927828, 2409785, 2754040, 3855656, 4819570, 9639140, 19278280]

約数ペア:

[(1, 19278280), (2, 9639140), (4, 4819570), (5, 3855656), (7, 2754040), (8, 2409785), (10, 1927828), (14, 1377020), (20, 963914), (28, 688510), (31, 621880), (35, 550808), (40, 481957), (56, 344255), (62, 310940), (70, 275404), (124, 155470), (140, 137702), (155, 124376), (217, 88840), (248, 77735), (280, 68851), (310, 62188), (434, 44420), (620, 31094), (868, 22210), (1085, 17768), (1240, 15547), (1736, 11105), (2170, 8884), (2221, 8680), (4340, 4442)]