19370660

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 42470400

約数和(自身を除く): 23099740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 199, 310, 314, 398, 620, 628, 785, 796, 995, 1570, 1990, 3140, 3980, 4867, 6169, 9734, 12338, 19468, 24335, 24676, 30845, 31243, 48670, 61690, 62486, 97340, 123380, 124972, 156215, 312430, 624860, 968533, 1937066, 3874132, 4842665, 9685330, 19370660]

約数ペア:

[(1, 19370660), (2, 9685330), (4, 4842665), (5, 3874132), (10, 1937066), (20, 968533), (31, 624860), (62, 312430), (124, 156215), (155, 124972), (157, 123380), (199, 97340), (310, 62486), (314, 61690), (398, 48670), (620, 31243), (628, 30845), (785, 24676), (796, 24335), (995, 19468), (1570, 12338), (1990, 9734), (3140, 6169), (3980, 4867)]