20450400

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{8521}}^1$

素因数の和:8544

約数の個数: 72

約数和(自身を含む): 66573864

約数和(自身を除く): 46123464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 96, 100, 120, 150, 160, 200, 240, 300, 400, 480, 600, 800, 1200, 2400, 8521, 17042, 25563, 34084, 42605, 51126, 68168, 85210, 102252, 127815, 136336, 170420, 204504, 213025, 255630, 272672, 340840, 409008, 426050, 511260, 639075, 681680, 818016, 852100, 1022520, 1278150, 1363360, 1704200, 2045040, 2556300, 3408400, 4090080, 5112600, 6816800, 10225200, 20450400]

約数ペア:

[(1, 20450400), (2, 10225200), (3, 6816800), (4, 5112600), (5, 4090080), (6, 3408400), (8, 2556300), (10, 2045040), (12, 1704200), (15, 1363360), (16, 1278150), (20, 1022520), (24, 852100), (25, 818016), (30, 681680), (32, 639075), (40, 511260), (48, 426050), (50, 409008), (60, 340840), (75, 272672), (80, 255630), (96, 213025), (100, 204504), (120, 170420), (150, 136336), (160, 127815), (200, 102252), (240, 85210), (300, 68168), (400, 51126), (480, 42605), (600, 34084), (800, 25563), (1200, 17042), (2400, 8521)]