638044420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1481}}^1\times {\mathrm{1657}}^1$

素因数の和:3160

約数の個数: 48

約数和(自身を含む): 1444807728

約数和(自身を除く): 806763308

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1481, 1657, 2962, 3314, 5924, 6628, 7405, 8285, 14810, 16570, 19253, 21541, 29620, 33140, 38506, 43082, 77012, 86164, 96265, 107705, 192530, 215410, 385060, 430820, 2454017, 4908034, 9816068, 12270085, 24540170, 31902221, 49080340, 63804442, 127608884, 159511105, 319022210, 638044420]

約数ペア:

[(1, 638044420), (2, 319022210), (4, 159511105), (5, 127608884), (10, 63804442), (13, 49080340), (20, 31902221), (26, 24540170), (52, 12270085), (65, 9816068), (130, 4908034), (260, 2454017), (1481, 430820), (1657, 385060), (2962, 215410), (3314, 192530), (5924, 107705), (6628, 96265), (7405, 86164), (8285, 77012), (14810, 43082), (16570, 38506), (19253, 33140), (21541, 29620)]