30969820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1409}}^1$

素因数の和:1582

約数の個数: 48

約数和(自身を含む): 74854080

約数和(自身を除く): 43884260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1409, 1570, 2198, 2818, 3140, 4396, 5495, 5636, 7045, 9863, 10990, 14090, 19726, 21980, 28180, 39452, 49315, 98630, 197260, 221213, 442426, 884852, 1106065, 1548491, 2212130, 3096982, 4424260, 6193964, 7742455, 15484910, 30969820]

約数ペア:

[(1, 30969820), (2, 15484910), (4, 7742455), (5, 6193964), (7, 4424260), (10, 3096982), (14, 2212130), (20, 1548491), (28, 1106065), (35, 884852), (70, 442426), (140, 221213), (157, 197260), (314, 98630), (628, 49315), (785, 39452), (1099, 28180), (1409, 21980), (1570, 19726), (2198, 14090), (2818, 10990), (3140, 9863), (4396, 7045), (5495, 5636)]