About the Number

1025642020

1025642019 ← → 1025642021

2進数表記:111101001000100000111000100100

漢数字表記:十億二千五百六十四万二千二十

素因数分解:

2 2 × 5 1 × 13 1 × 43 1 × 199 1 × 461 1

素因数の和:725
約数の個数: 96
約数和(自身を含む): 2390572800
約数和(自身を除く): 1364930780

約数列:
[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 199, 215, 260, 398, 430, 461, 559, 796, 860, 922, 995, 1118, 1844, 1990, 2236, 2305, 2587, 2795, 3980, 4610, 5174, 5590, 5993, 8557, 9220, 10348, 11180, 11986, 12935, 17114, 19823, 23972, 25870, 29965, 34228, 39646, 42785, 51740, 59930, 79292, 85570, 91739, 99115, 111241, 119860, 171140, 183478, 198230, 222482, 257699, 366956, 396460, 444964, 458695, 515398, 556205, 917390, 1030796, 1112410, 1192607, 1288495, 1834780, 2224820, 2385214, 2576990, 3944777, 4770428, 5153980, 5963035, 7889554, 11926070, 15779108, 19723885, 23852140, 39447770, 51282101, 78895540, 102564202, 205128404, 256410505, 512821010, 1025642020]

約数ペア:
[(1, 1025642020), (2, 512821010), (4, 256410505), (5, 205128404), (10, 102564202), (13, 78895540), (20, 51282101), (26, 39447770), (43, 23852140), (52, 19723885), (65, 15779108), (86, 11926070), (130, 7889554), (172, 5963035), (199, 5153980), (215, 4770428), (260, 3944777), (398, 2576990), (430, 2385214), (461, 2224820), (559, 1834780), (796, 1288495), (860, 1192607), (922, 1112410), (995, 1030796), (1118, 917390), (1844, 556205), (1990, 515398), (2236, 458695), (2305, 444964), (2587, 396460), (2795, 366956), (3980, 257699), (4610, 222482), (5174, 198230), (5590, 183478), (5993, 171140), (8557, 119860), (9220, 111241), (10348, 99115), (11180, 91739), (11986, 85570), (12935, 79292), (17114, 59930), (19823, 51740), (23972, 42785), (25870, 39646), (29965, 34228)]

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