21460120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 37637480

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 19, 20, 22, 34, 38, 40, 44, 55, 68, 76, 85, 88, 95, 110, 136, 151, 152, 170, 187, 190, 209, 220, 302, 323, 340, 374, 380, 418, 440, 604, 646, 680, 748, 755, 760, 836, 935, 1045, 1208, 1292, 1496, 1510, 1615, 1661, 1672, 1870, 2090, 2567, 2584, 2869, 3020, 3230, 3322, 3553, 3740, 4180, 5134, 5738, 6040, 6460, 6644, 7106, 7480, 8305, 8360, 10268, 11476, 12835, 12920, 13288, 14212, 14345, 16610, 17765, 20536, 22952, 25670, 28237, 28424, 28690, 31559, 33220, 35530, 48773, 51340, 56474, 57380, 63118, 66440, 71060, 97546, 102680, 112948, 114760, 126236, 141185, 142120, 157795, 195092, 225896, 243865, 252472, 282370, 315590, 390184, 487730, 536503, 564740, 631180, 975460, 1073006, 1129480, 1262360, 1950920, 2146012, 2682515, 4292024, 5365030, 10730060, 21460120]

約数ペア:

[(1, 21460120), (2, 10730060), (4, 5365030), (5, 4292024), (8, 2682515), (10, 2146012), (11, 1950920), (17, 1262360), (19, 1129480), (20, 1073006), (22, 975460), (34, 631180), (38, 564740), (40, 536503), (44, 487730), (55, 390184), (68, 315590), (76, 282370), (85, 252472), (88, 243865), (95, 225896), (110, 195092), (136, 157795), (151, 142120), (152, 141185), (170, 126236), (187, 114760), (190, 112948), (209, 102680), (220, 97546), (302, 71060), (323, 66440), (340, 63118), (374, 57380), (380, 56474), (418, 51340), (440, 48773), (604, 35530), (646, 33220), (680, 31559), (748, 28690), (755, 28424), (760, 28237), (836, 25670), (935, 22952), (1045, 20536), (1208, 17765), (1292, 16610), (1496, 14345), (1510, 14212), (1615, 13288), (1661, 12920), (1672, 12835), (1870, 11476), (2090, 10268), (2567, 8360), (2584, 8305), (2869, 7480), (3020, 7106), (3230, 6644), (3322, 6460), (3553, 6040), (3740, 5738), (4180, 5134)]