21312304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1297}}^1$

素因数の和:1397

約数の個数: 40

約数和(自身を含む): 45066560

約数和(自身を除く): 23754256

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1264, 1297, 2054, 2594, 4108, 5188, 8216, 10376, 16432, 16861, 20752, 33722, 67444, 102463, 134888, 204926, 269776, 409852, 819704, 1332019, 1639408, 2664038, 5328076, 10656152, 21312304]

約数ペア:

[(1, 21312304), (2, 10656152), (4, 5328076), (8, 2664038), (13, 1639408), (16, 1332019), (26, 819704), (52, 409852), (79, 269776), (104, 204926), (158, 134888), (208, 102463), (316, 67444), (632, 33722), (1027, 20752), (1264, 16861), (1297, 16432), (2054, 10376), (2594, 8216), (4108, 5188)]