21399690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1483}}^1$

素因数の和:1543

約数の個数: 64

約数和(自身を含む): 56843136

約数和(自身を除く): 35443446

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 37, 39, 65, 74, 78, 111, 130, 185, 195, 222, 370, 390, 481, 555, 962, 1110, 1443, 1483, 2405, 2886, 2966, 4449, 4810, 7215, 7415, 8898, 14430, 14830, 19279, 22245, 38558, 44490, 54871, 57837, 96395, 109742, 115674, 164613, 192790, 274355, 289185, 329226, 548710, 578370, 713323, 823065, 1426646, 1646130, 2139969, 3566615, 4279938, 7133230, 10699845, 21399690]

約数ペア:

[(1, 21399690), (2, 10699845), (3, 7133230), (5, 4279938), (6, 3566615), (10, 2139969), (13, 1646130), (15, 1426646), (26, 823065), (30, 713323), (37, 578370), (39, 548710), (65, 329226), (74, 289185), (78, 274355), (111, 192790), (130, 164613), (185, 115674), (195, 109742), (222, 96395), (370, 57837), (390, 54871), (481, 44490), (555, 38558), (962, 22245), (1110, 19279), (1443, 14830), (1483, 14430), (2405, 8898), (2886, 7415), (2966, 7215), (4449, 4810)]