21007860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9463}}^1$

素因数の和:9512

約数の個数: 48

約数和(自身を含む): 60418176

約数和(自身を除く): 39410316

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9463, 18926, 28389, 37852, 47315, 56778, 94630, 113556, 141945, 189260, 283890, 350131, 567780, 700262, 1050393, 1400524, 1750655, 2100786, 3501310, 4201572, 5251965, 7002620, 10503930, 21007860]

約数ペア:

[(1, 21007860), (2, 10503930), (3, 7002620), (4, 5251965), (5, 4201572), (6, 3501310), (10, 2100786), (12, 1750655), (15, 1400524), (20, 1050393), (30, 700262), (37, 567780), (60, 350131), (74, 283890), (111, 189260), (148, 141945), (185, 113556), (222, 94630), (370, 56778), (444, 47315), (555, 37852), (740, 28389), (1110, 18926), (2220, 9463)]