21312408

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{823}}^1$

素因数の和:928

約数の個数: 64

約数和(自身を含む): 58141440

約数和(自身を除く): 36829032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 83, 104, 156, 166, 249, 312, 332, 498, 664, 823, 996, 1079, 1646, 1992, 2158, 2469, 3237, 3292, 4316, 4938, 6474, 6584, 8632, 9876, 10699, 12948, 19752, 21398, 25896, 32097, 42796, 64194, 68309, 85592, 128388, 136618, 204927, 256776, 273236, 409854, 546472, 819708, 888017, 1639416, 1776034, 2664051, 3552068, 5328102, 7104136, 10656204, 21312408]

約数ペア:

[(1, 21312408), (2, 10656204), (3, 7104136), (4, 5328102), (6, 3552068), (8, 2664051), (12, 1776034), (13, 1639416), (24, 888017), (26, 819708), (39, 546472), (52, 409854), (78, 273236), (83, 256776), (104, 204927), (156, 136618), (166, 128388), (249, 85592), (312, 68309), (332, 64194), (498, 42796), (664, 32097), (823, 25896), (996, 21398), (1079, 19752), (1646, 12948), (1992, 10699), (2158, 9876), (2469, 8632), (3237, 6584), (3292, 6474), (4316, 4938)]