28021520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11299}}^1$

素因数の和:11343

約数の個数: 40

約数和(自身を含む): 67257600

約数和(自身を除く): 39236080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11299, 22598, 45196, 56495, 90392, 112990, 180784, 225980, 350269, 451960, 700538, 903920, 1401076, 1751345, 2802152, 3502690, 5604304, 7005380, 14010760, 28021520]

約数ペア:

[(1, 28021520), (2, 14010760), (4, 7005380), (5, 5604304), (8, 3502690), (10, 2802152), (16, 1751345), (20, 1401076), (31, 903920), (40, 700538), (62, 451960), (80, 350269), (124, 225980), (155, 180784), (248, 112990), (310, 90392), (496, 56495), (620, 45196), (1240, 22598), (2480, 11299)]