20499660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1867}}^1$

素因数の和:1943

約数の個数: 72

約数和(自身を含む): 63235536

約数和(自身を除く): 42735876

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, 1830, 1867, 2196, 2745, 3660, 3734, 5490, 5601, 7468, 9335, 10980, 11202, 16803, 18670, 22404, 28005, 33606, 37340, 56010, 67212, 84015, 112020, 113887, 168030, 227774, 336060, 341661, 455548, 569435, 683322, 1024983, 1138870, 1366644, 1708305, 2049966, 2277740, 3416610, 4099932, 5124915, 6833220, 10249830, 20499660]

約数ペア:

[(1, 20499660), (2, 10249830), (3, 6833220), (4, 5124915), (5, 4099932), (6, 3416610), (9, 2277740), (10, 2049966), (12, 1708305), (15, 1366644), (18, 1138870), (20, 1024983), (30, 683322), (36, 569435), (45, 455548), (60, 341661), (61, 336060), (90, 227774), (122, 168030), (180, 113887), (183, 112020), (244, 84015), (305, 67212), (366, 56010), (549, 37340), (610, 33606), (732, 28005), (915, 22404), (1098, 18670), (1220, 16803), (1830, 11202), (1867, 10980), (2196, 9335), (2745, 7468), (3660, 5601), (3734, 5490)]