1218354920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{3109}}^1$

素因数の和:3318

約数の個数: 64

約数和(自身を含む): 2797880400

約数和(自身を除く): 1579525480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 101, 194, 202, 388, 404, 485, 505, 776, 808, 970, 1010, 1940, 2020, 3109, 3880, 4040, 6218, 9797, 12436, 15545, 19594, 24872, 31090, 39188, 48985, 62180, 78376, 97970, 124360, 195940, 301573, 314009, 391880, 603146, 628018, 1206292, 1256036, 1507865, 1570045, 2412584, 2512072, 3015730, 3140090, 6031460, 6280180, 12062920, 12560360, 30458873, 60917746, 121835492, 152294365, 243670984, 304588730, 609177460, 1218354920]

約数ペア:

[(1, 1218354920), (2, 609177460), (4, 304588730), (5, 243670984), (8, 152294365), (10, 121835492), (20, 60917746), (40, 30458873), (97, 12560360), (101, 12062920), (194, 6280180), (202, 6031460), (388, 3140090), (404, 3015730), (485, 2512072), (505, 2412584), (776, 1570045), (808, 1507865), (970, 1256036), (1010, 1206292), (1940, 628018), (2020, 603146), (3109, 391880), (3880, 314009), (4040, 301573), (6218, 195940), (9797, 124360), (12436, 97970), (15545, 78376), (19594, 62180), (24872, 48985), (31090, 39188)]