198267320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1259}}^1$

素因数の和:1428

約数の個数: 64

約数和(自身を含む): 464486400

約数和(自身を除く): 266219080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 248, 254, 310, 508, 620, 635, 1016, 1240, 1259, 1270, 2518, 2540, 3937, 5036, 5080, 6295, 7874, 10072, 12590, 15748, 19685, 25180, 31496, 39029, 39370, 50360, 78058, 78740, 156116, 157480, 159893, 195145, 312232, 319786, 390290, 639572, 780580, 799465, 1279144, 1561160, 1598930, 3197860, 4956683, 6395720, 9913366, 19826732, 24783415, 39653464, 49566830, 99133660, 198267320]

約数ペア:

[(1, 198267320), (2, 99133660), (4, 49566830), (5, 39653464), (8, 24783415), (10, 19826732), (20, 9913366), (31, 6395720), (40, 4956683), (62, 3197860), (124, 1598930), (127, 1561160), (155, 1279144), (248, 799465), (254, 780580), (310, 639572), (508, 390290), (620, 319786), (635, 312232), (1016, 195145), (1240, 159893), (1259, 157480), (1270, 156116), (2518, 78740), (2540, 78058), (3937, 50360), (5036, 39370), (5080, 39029), (6295, 31496), (7874, 25180), (10072, 19685), (12590, 15748)]