139757440

素因数分解:

$2^7\times 5^1\times {\mathrm{218371}}^1$

素因数の和:218390

約数の個数: 32

約数和(自身を含む): 334109160

約数和(自身を除く): 194351720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 218371, 436742, 873484, 1091855, 1746968, 2183710, 3493936, 4367420, 6987872, 8734840, 13975744, 17469680, 27951488, 34939360, 69878720, 139757440]

約数ペア:

[(1, 139757440), (2, 69878720), (4, 34939360), (5, 27951488), (8, 17469680), (10, 13975744), (16, 8734840), (20, 6987872), (32, 4367420), (40, 3493936), (64, 2183710), (80, 1746968), (128, 1091855), (160, 873484), (320, 436742), (640, 218371)]