423440

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:159

約数の個数: 40

約数和(自身を含む): 1011840

約数和(自身を除く): 588400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 79, 80, 134, 158, 268, 316, 335, 395, 536, 632, 670, 790, 1072, 1264, 1340, 1580, 2680, 3160, 5293, 5360, 6320, 10586, 21172, 26465, 42344, 52930, 84688, 105860, 211720, 423440]

約数ペア:

[(1, 423440), (2, 211720), (4, 105860), (5, 84688), (8, 52930), (10, 42344), (16, 26465), (20, 21172), (40, 10586), (67, 6320), (79, 5360), (80, 5293), (134, 3160), (158, 2680), (268, 1580), (316, 1340), (335, 1264), (395, 1072), (536, 790), (632, 670)]