21553291263

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{593}}^1\times {\mathrm{2549}}^1$

素因数の和:3256

約数の個数: 48

約数和(自身を含む): 33844456800

約数和(自身を除く): 12291165537

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 593, 679, 1779, 2037, 2549, 4151, 4753, 7647, 12453, 14259, 17843, 29057, 53529, 57521, 87171, 124901, 172563, 247253, 374703, 402647, 741759, 1207941, 1511557, 1730771, 2818529, 4534671, 5192313, 8455587, 10580899, 12115397, 31742697, 36346191, 74066293, 146621029, 222198879, 439863087, 1026347203, 3079041609, 7184430421, 21553291263]

約数ペア:

[(1, 21553291263), (3, 7184430421), (7, 3079041609), (21, 1026347203), (49, 439863087), (97, 222198879), (147, 146621029), (291, 74066293), (593, 36346191), (679, 31742697), (1779, 12115397), (2037, 10580899), (2549, 8455587), (4151, 5192313), (4753, 4534671), (7647, 2818529), (12453, 1730771), (14259, 1511557), (17843, 1207941), (29057, 741759), (53529, 402647), (57521, 374703), (87171, 247253), (124901, 172563)]