20656971

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{601}}^1$

素因数の和:696

約数の個数: 32

約数和(自身を含む): 32748800

約数和(自身を除く): 12091829

約数列:

[1, 3, 9, 19, 27, 57, 67, 171, 201, 513, 601, 603, 1273, 1803, 1809, 3819, 5409, 11419, 11457, 16227, 34257, 34371, 40267, 102771, 120801, 308313, 362403, 765073, 1087209, 2295219, 6885657, 20656971]

約数ペア:

[(1, 20656971), (3, 6885657), (9, 2295219), (19, 1087209), (27, 765073), (57, 362403), (67, 308313), (171, 120801), (201, 102771), (513, 40267), (601, 34371), (603, 34257), (1273, 16227), (1803, 11457), (1809, 11419), (3819, 5409)]