128992240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4001}}^1$

素因数の和:4058

約数の個数: 80

約数和(自身を含む): 333478656

約数和(自身を除く): 204486416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4001, 4030, 6448, 8002, 8060, 16004, 16120, 20005, 32008, 32240, 40010, 52013, 64016, 80020, 104026, 124031, 160040, 208052, 248062, 260065, 320080, 416104, 496124, 520130, 620155, 832208, 992248, 1040260, 1240310, 1612403, 1984496, 2080520, 2480620, 3224806, 4161040, 4961240, 6449612, 8062015, 9922480, 12899224, 16124030, 25798448, 32248060, 64496120, 128992240]

約数ペア:

[(1, 128992240), (2, 64496120), (4, 32248060), (5, 25798448), (8, 16124030), (10, 12899224), (13, 9922480), (16, 8062015), (20, 6449612), (26, 4961240), (31, 4161040), (40, 3224806), (52, 2480620), (62, 2080520), (65, 1984496), (80, 1612403), (104, 1240310), (124, 1040260), (130, 992248), (155, 832208), (208, 620155), (248, 520130), (260, 496124), (310, 416104), (403, 320080), (496, 260065), (520, 248062), (620, 208052), (806, 160040), (1040, 124031), (1240, 104026), (1612, 80020), (2015, 64016), (2480, 52013), (3224, 40010), (4001, 32240), (4030, 32008), (6448, 20005), (8002, 16120), (8060, 16004)]