20016540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1823}}^1$

素因数の和:1899

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 41729508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1823, 1830, 2196, 2745, 3646, 3660, 5469, 5490, 7292, 9115, 10938, 10980, 16407, 18230, 21876, 27345, 32814, 36460, 54690, 65628, 82035, 109380, 111203, 164070, 222406, 328140, 333609, 444812, 556015, 667218, 1000827, 1112030, 1334436, 1668045, 2001654, 2224060, 3336090, 4003308, 5004135, 6672180, 10008270, 20016540]

約数ペア:

[(1, 20016540), (2, 10008270), (3, 6672180), (4, 5004135), (5, 4003308), (6, 3336090), (9, 2224060), (10, 2001654), (12, 1668045), (15, 1334436), (18, 1112030), (20, 1000827), (30, 667218), (36, 556015), (45, 444812), (60, 333609), (61, 328140), (90, 222406), (122, 164070), (180, 111203), (183, 109380), (244, 82035), (305, 65628), (366, 54690), (549, 36460), (610, 32814), (732, 27345), (915, 21876), (1098, 18230), (1220, 16407), (1823, 10980), (1830, 10938), (2196, 9115), (2745, 7292), (3646, 5490), (3660, 5469)]