221416520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{425801}}^1$

素因数の和:425825

約数の個数: 32

約数和(自身を含む): 536510520

約数和(自身を除く): 315094000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 425801, 851602, 1703204, 2129005, 3406408, 4258010, 5535413, 8516020, 11070826, 17032040, 22141652, 27677065, 44283304, 55354130, 110708260, 221416520]

約数ペア:

[(1, 221416520), (2, 110708260), (4, 55354130), (5, 44283304), (8, 27677065), (10, 22141652), (13, 17032040), (20, 11070826), (26, 8516020), (40, 5535413), (52, 4258010), (65, 3406408), (104, 2129005), (130, 1703204), (260, 851602), (520, 425801)]