20889664

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:491

約数の個数: 56

約数和(自身を含む): 44805600

約数和(自身を除く): 23915936

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 152, 164, 304, 328, 419, 608, 656, 779, 838, 1216, 1312, 1558, 1676, 2624, 3116, 3352, 6232, 6704, 7961, 12464, 13408, 15922, 17179, 24928, 26816, 31844, 34358, 49856, 63688, 68716, 127376, 137432, 254752, 274864, 326401, 509504, 549728, 652802, 1099456, 1305604, 2611208, 5222416, 10444832, 20889664]

約数ペア:

[(1, 20889664), (2, 10444832), (4, 5222416), (8, 2611208), (16, 1305604), (19, 1099456), (32, 652802), (38, 549728), (41, 509504), (64, 326401), (76, 274864), (82, 254752), (152, 137432), (164, 127376), (304, 68716), (328, 63688), (419, 49856), (608, 34358), (656, 31844), (779, 26816), (838, 24928), (1216, 17179), (1312, 15922), (1558, 13408), (1676, 12464), (2624, 7961), (3116, 6704), (3352, 6232)]