262639280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1319}}^1$

素因数の和:1482

約数の個数: 80

約数和(自身を含む): 648172800

約数和(自身を除く): 385533520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 131, 152, 190, 262, 304, 380, 524, 655, 760, 1048, 1310, 1319, 1520, 2096, 2489, 2620, 2638, 4978, 5240, 5276, 6595, 9956, 10480, 10552, 12445, 13190, 19912, 21104, 24890, 25061, 26380, 39824, 49780, 50122, 52760, 99560, 100244, 105520, 125305, 172789, 199120, 200488, 250610, 345578, 400976, 501220, 691156, 863945, 1002440, 1382312, 1727890, 2004880, 2764624, 3282991, 3455780, 6565982, 6911560, 13131964, 13823120, 16414955, 26263928, 32829910, 52527856, 65659820, 131319640, 262639280]

約数ペア:

[(1, 262639280), (2, 131319640), (4, 65659820), (5, 52527856), (8, 32829910), (10, 26263928), (16, 16414955), (19, 13823120), (20, 13131964), (38, 6911560), (40, 6565982), (76, 3455780), (80, 3282991), (95, 2764624), (131, 2004880), (152, 1727890), (190, 1382312), (262, 1002440), (304, 863945), (380, 691156), (524, 501220), (655, 400976), (760, 345578), (1048, 250610), (1310, 200488), (1319, 199120), (1520, 172789), (2096, 125305), (2489, 105520), (2620, 100244), (2638, 99560), (4978, 52760), (5240, 50122), (5276, 49780), (6595, 39824), (9956, 26380), (10480, 25061), (10552, 24890), (12445, 21104), (13190, 19912)]