21720288

素因数分解:

$2^5\times 3^1\times {\mathrm{17}}^1\times {\mathrm{13309}}^1$

素因数の和:13339

約数の個数: 48

約数和(自身を含む): 60374160

約数和(自身を除く): 38653872

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 32, 34, 48, 51, 68, 96, 102, 136, 204, 272, 408, 544, 816, 1632, 13309, 26618, 39927, 53236, 79854, 106472, 159708, 212944, 226253, 319416, 425888, 452506, 638832, 678759, 905012, 1277664, 1357518, 1810024, 2715036, 3620048, 5430072, 7240096, 10860144, 21720288]

約数ペア:

[(1, 21720288), (2, 10860144), (3, 7240096), (4, 5430072), (6, 3620048), (8, 2715036), (12, 1810024), (16, 1357518), (17, 1277664), (24, 905012), (32, 678759), (34, 638832), (48, 452506), (51, 425888), (68, 319416), (96, 226253), (102, 212944), (136, 159708), (204, 106472), (272, 79854), (408, 53236), (544, 39927), (816, 26618), (1632, 13309)]