28102840

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{7243}}^1$

素因数の和:7351

約数の個数: 32

約数和(自身を含む): 63892080

約数和(自身を除く): 35789240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 7243, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 702571, 1405142, 2810284, 3512855, 5620568, 7025710, 14051420, 28102840]

約数ペア:

[(1, 28102840), (2, 14051420), (4, 7025710), (5, 5620568), (8, 3512855), (10, 2810284), (20, 1405142), (40, 702571), (97, 289720), (194, 144860), (388, 72430), (485, 57944), (776, 36215), (970, 28972), (1940, 14486), (3880, 7243)]