20856144

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:508

約数の個数: 80

約数和(自身を含む): 58121280

約数和(自身を除く): 37265136

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 61, 68, 102, 122, 136, 183, 204, 244, 272, 366, 408, 419, 488, 732, 816, 838, 976, 1037, 1257, 1464, 1676, 2074, 2514, 2928, 3111, 3352, 4148, 5028, 6222, 6704, 7123, 8296, 10056, 12444, 14246, 16592, 20112, 21369, 24888, 25559, 28492, 42738, 49776, 51118, 56984, 76677, 85476, 102236, 113968, 153354, 170952, 204472, 306708, 341904, 408944, 434503, 613416, 869006, 1226832, 1303509, 1738012, 2607018, 3476024, 5214036, 6952048, 10428072, 20856144]

約数ペア:

[(1, 20856144), (2, 10428072), (3, 6952048), (4, 5214036), (6, 3476024), (8, 2607018), (12, 1738012), (16, 1303509), (17, 1226832), (24, 869006), (34, 613416), (48, 434503), (51, 408944), (61, 341904), (68, 306708), (102, 204472), (122, 170952), (136, 153354), (183, 113968), (204, 102236), (244, 85476), (272, 76677), (366, 56984), (408, 51118), (419, 49776), (488, 42738), (732, 28492), (816, 25559), (838, 24888), (976, 21369), (1037, 20112), (1257, 16592), (1464, 14246), (1676, 12444), (2074, 10056), (2514, 8296), (2928, 7123), (3111, 6704), (3352, 6222), (4148, 5028)]