21391584

素因数分解:

$2^5\times 3^1\times {\mathrm{443}}^1\times {\mathrm{503}}^1$

素因数の和:959

約数の個数: 48

約数和(自身を含む): 56391552

約数和(自身を除く): 34999968

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 443, 503, 886, 1006, 1329, 1509, 1772, 2012, 2658, 3018, 3544, 4024, 5316, 6036, 7088, 8048, 10632, 12072, 14176, 16096, 21264, 24144, 42528, 48288, 222829, 445658, 668487, 891316, 1336974, 1782632, 2673948, 3565264, 5347896, 7130528, 10695792, 21391584]

約数ペア:

[(1, 21391584), (2, 10695792), (3, 7130528), (4, 5347896), (6, 3565264), (8, 2673948), (12, 1782632), (16, 1336974), (24, 891316), (32, 668487), (48, 445658), (96, 222829), (443, 48288), (503, 42528), (886, 24144), (1006, 21264), (1329, 16096), (1509, 14176), (1772, 12072), (2012, 10632), (2658, 8048), (3018, 7088), (3544, 6036), (4024, 5316)]