72800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{13}}^1$

素因数の和:40

約数の個数: 72

約数和(自身を含む): 218736

約数和(自身を除く): 145936

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 65, 70, 80, 91, 100, 104, 112, 130, 140, 160, 175, 182, 200, 208, 224, 260, 280, 325, 350, 364, 400, 416, 455, 520, 560, 650, 700, 728, 800, 910, 1040, 1120, 1300, 1400, 1456, 1820, 2080, 2275, 2600, 2800, 2912, 3640, 4550, 5200, 5600, 7280, 9100, 10400, 14560, 18200, 36400, 72800]

約数ペア:

[(1, 72800), (2, 36400), (4, 18200), (5, 14560), (7, 10400), (8, 9100), (10, 7280), (13, 5600), (14, 5200), (16, 4550), (20, 3640), (25, 2912), (26, 2800), (28, 2600), (32, 2275), (35, 2080), (40, 1820), (50, 1456), (52, 1400), (56, 1300), (65, 1120), (70, 1040), (80, 910), (91, 800), (100, 728), (104, 700), (112, 650), (130, 560), (140, 520), (160, 455), (175, 416), (182, 400), (200, 364), (208, 350), (224, 325), (260, 280)]