19656400

素因数分解:

$2^4\times 5^2\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:488

約数の個数: 60

約数和(自身を含む): 47677132

約数和(自身を除く): 28020732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 157, 200, 313, 314, 400, 626, 628, 785, 1252, 1256, 1565, 1570, 2504, 2512, 3130, 3140, 3925, 5008, 6260, 6280, 7825, 7850, 12520, 12560, 15650, 15700, 25040, 31300, 31400, 49141, 62600, 62800, 98282, 125200, 196564, 245705, 393128, 491410, 786256, 982820, 1228525, 1965640, 2457050, 3931280, 4914100, 9828200, 19656400]

約数ペア:

[(1, 19656400), (2, 9828200), (4, 4914100), (5, 3931280), (8, 2457050), (10, 1965640), (16, 1228525), (20, 982820), (25, 786256), (40, 491410), (50, 393128), (80, 245705), (100, 196564), (157, 125200), (200, 98282), (313, 62800), (314, 62600), (400, 49141), (626, 31400), (628, 31300), (785, 25040), (1252, 15700), (1256, 15650), (1565, 12560), (1570, 12520), (2504, 7850), (2512, 7825), (3130, 6280), (3140, 6260), (3925, 5008)]