31455320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{251}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 76839840

約数和(自身を除く): 45384520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 241, 251, 260, 482, 502, 520, 964, 1004, 1205, 1255, 1928, 2008, 2410, 2510, 3133, 3263, 4820, 5020, 6266, 6526, 9640, 10040, 12532, 13052, 15665, 16315, 25064, 26104, 31330, 32630, 60491, 62660, 65260, 120982, 125320, 130520, 241964, 302455, 483928, 604910, 786383, 1209820, 1572766, 2419640, 3145532, 3931915, 6291064, 7863830, 15727660, 31455320]

約数ペア:

[(1, 31455320), (2, 15727660), (4, 7863830), (5, 6291064), (8, 3931915), (10, 3145532), (13, 2419640), (20, 1572766), (26, 1209820), (40, 786383), (52, 604910), (65, 483928), (104, 302455), (130, 241964), (241, 130520), (251, 125320), (260, 120982), (482, 65260), (502, 62660), (520, 60491), (964, 32630), (1004, 31330), (1205, 26104), (1255, 25064), (1928, 16315), (2008, 15665), (2410, 13052), (2510, 12532), (3133, 10040), (3263, 9640), (4820, 6526), (5020, 6266)]