81380340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4001}}^1$

素因数の和:4129

約数の個数: 72

約数和(自身を含む): 249100488

約数和(自身を除く): 167720148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 1017, 1130, 1356, 1695, 2034, 2260, 3390, 4001, 4068, 5085, 6780, 8002, 10170, 12003, 16004, 20005, 20340, 24006, 36009, 40010, 48012, 60015, 72018, 80020, 120030, 144036, 180045, 240060, 360090, 452113, 720180, 904226, 1356339, 1808452, 2260565, 2712678, 4069017, 4521130, 5425356, 6781695, 8138034, 9042260, 13563390, 16276068, 20345085, 27126780, 40690170, 81380340]

約数ペア:

[(1, 81380340), (2, 40690170), (3, 27126780), (4, 20345085), (5, 16276068), (6, 13563390), (9, 9042260), (10, 8138034), (12, 6781695), (15, 5425356), (18, 4521130), (20, 4069017), (30, 2712678), (36, 2260565), (45, 1808452), (60, 1356339), (90, 904226), (113, 720180), (180, 452113), (226, 360090), (339, 240060), (452, 180045), (565, 144036), (678, 120030), (1017, 80020), (1130, 72018), (1356, 60015), (1695, 48012), (2034, 40010), (2260, 36009), (3390, 24006), (4001, 20340), (4068, 20005), (5085, 16004), (6780, 12003), (8002, 10170)]