40780000

素因数分解:

$2^5\times 5^4\times {\mathrm{2039}}^1$

素因数の和:2069

約数の個数: 60

約数和(自身を含む): 100374120

約数和(自身を除く): 59594120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2039, 2500, 4000, 4078, 5000, 8156, 10000, 10195, 16312, 20000, 20390, 32624, 40780, 50975, 65248, 81560, 101950, 163120, 203900, 254875, 326240, 407800, 509750, 815600, 1019500, 1274375, 1631200, 2039000, 2548750, 4078000, 5097500, 8156000, 10195000, 20390000, 40780000]

約数ペア:

[(1, 40780000), (2, 20390000), (4, 10195000), (5, 8156000), (8, 5097500), (10, 4078000), (16, 2548750), (20, 2039000), (25, 1631200), (32, 1274375), (40, 1019500), (50, 815600), (80, 509750), (100, 407800), (125, 326240), (160, 254875), (200, 203900), (250, 163120), (400, 101950), (500, 81560), (625, 65248), (800, 50975), (1000, 40780), (1250, 32624), (2000, 20390), (2039, 20000), (2500, 16312), (4000, 10195), (4078, 10000), (5000, 8156)]