221967285

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1\times {\mathrm{857}}^1$

素因数の和:1453

約数の個数: 32

約数和(自身を含む): 367690752

約数和(自身を除く): 145723467

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 557, 857, 1671, 2571, 2785, 4285, 8355, 12855, 17267, 26567, 51801, 79701, 86335, 132835, 259005, 398505, 477349, 1432047, 2386745, 7160235, 14797819, 44393457, 73989095, 221967285]

約数ペア:

[(1, 221967285), (3, 73989095), (5, 44393457), (15, 14797819), (31, 7160235), (93, 2386745), (155, 1432047), (465, 477349), (557, 398505), (857, 259005), (1671, 132835), (2571, 86335), (2785, 79701), (4285, 51801), (8355, 26567), (12855, 17267)]