20385705

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1597}}^1$

素因数の和:1665

約数の個数: 32

約数和(自身を含む): 34977024

約数和(自身を除く): 14591319

約数列:

[1, 3, 5, 15, 23, 37, 69, 111, 115, 185, 345, 555, 851, 1597, 2553, 4255, 4791, 7985, 12765, 23955, 36731, 59089, 110193, 177267, 183655, 295445, 550965, 886335, 1359047, 4077141, 6795235, 20385705]

約数ペア:

[(1, 20385705), (3, 6795235), (5, 4077141), (15, 1359047), (23, 886335), (37, 550965), (69, 295445), (111, 183655), (115, 177267), (185, 110193), (345, 59089), (555, 36731), (851, 23955), (1597, 12765), (2553, 7985), (4255, 4791)]