28438820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1117}}^1$

素因数の和:1212

約数の個数: 48

約数和(自身を含む): 63860160

約数和(自身を除く): 35421340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 134, 190, 268, 335, 380, 670, 1117, 1273, 1340, 2234, 2546, 4468, 5092, 5585, 6365, 11170, 12730, 21223, 22340, 25460, 42446, 74839, 84892, 106115, 149678, 212230, 299356, 374195, 424460, 748390, 1421941, 1496780, 2843882, 5687764, 7109705, 14219410, 28438820]

約数ペア:

[(1, 28438820), (2, 14219410), (4, 7109705), (5, 5687764), (10, 2843882), (19, 1496780), (20, 1421941), (38, 748390), (67, 424460), (76, 374195), (95, 299356), (134, 212230), (190, 149678), (268, 106115), (335, 84892), (380, 74839), (670, 42446), (1117, 25460), (1273, 22340), (1340, 21223), (2234, 12730), (2546, 11170), (4468, 6365), (5092, 5585)]