20478016

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:339

約数の個数: 56

約数和(自身を含む): 44321984

約数和(自身を除く): 23843968

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 151, 163, 208, 302, 326, 416, 604, 652, 832, 1208, 1304, 1963, 2119, 2416, 2608, 3926, 4238, 4832, 5216, 7852, 8476, 9664, 10432, 15704, 16952, 24613, 31408, 33904, 49226, 62816, 67808, 98452, 125632, 135616, 196904, 319969, 393808, 639938, 787616, 1279876, 1575232, 2559752, 5119504, 10239008, 20478016]

約数ペア:

[(1, 20478016), (2, 10239008), (4, 5119504), (8, 2559752), (13, 1575232), (16, 1279876), (26, 787616), (32, 639938), (52, 393808), (64, 319969), (104, 196904), (151, 135616), (163, 125632), (208, 98452), (302, 67808), (326, 62816), (416, 49226), (604, 33904), (652, 31408), (832, 24613), (1208, 16952), (1304, 15704), (1963, 10432), (2119, 9664), (2416, 8476), (2608, 7852), (3926, 5216), (4238, 4832)]