25553320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 62511120

約数和(自身を除く): 36957800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 313, 314, 520, 626, 628, 785, 1252, 1256, 1565, 1570, 2041, 2504, 3130, 3140, 4069, 4082, 6260, 6280, 8138, 8164, 10205, 12520, 16276, 16328, 20345, 20410, 32552, 40690, 40820, 49141, 81380, 81640, 98282, 162760, 196564, 245705, 393128, 491410, 638833, 982820, 1277666, 1965640, 2555332, 3194165, 5110664, 6388330, 12776660, 25553320]

約数ペア:

[(1, 25553320), (2, 12776660), (4, 6388330), (5, 5110664), (8, 3194165), (10, 2555332), (13, 1965640), (20, 1277666), (26, 982820), (40, 638833), (52, 491410), (65, 393128), (104, 245705), (130, 196564), (157, 162760), (260, 98282), (313, 81640), (314, 81380), (520, 49141), (626, 40820), (628, 40690), (785, 32552), (1252, 20410), (1256, 20345), (1565, 16328), (1570, 16276), (2041, 12520), (2504, 10205), (3130, 8164), (3140, 8138), (4069, 6280), (4082, 6260)]