21559020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7333}}^1$

素因数の和:7359

約数の個数: 72

約数和(自身を含む): 70230384

約数和(自身を除く): 48671364

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7333, 14666, 21999, 29332, 36665, 43998, 51331, 73330, 87996, 102662, 109995, 146660, 153993, 205324, 219990, 256655, 307986, 359317, 439980, 513310, 615972, 718634, 769965, 1026620, 1077951, 1437268, 1539930, 1796585, 2155902, 3079860, 3593170, 4311804, 5389755, 7186340, 10779510, 21559020]

約数ペア:

[(1, 21559020), (2, 10779510), (3, 7186340), (4, 5389755), (5, 4311804), (6, 3593170), (7, 3079860), (10, 2155902), (12, 1796585), (14, 1539930), (15, 1437268), (20, 1077951), (21, 1026620), (28, 769965), (30, 718634), (35, 615972), (42, 513310), (49, 439980), (60, 359317), (70, 307986), (84, 256655), (98, 219990), (105, 205324), (140, 153993), (147, 146660), (196, 109995), (210, 102662), (245, 87996), (294, 73330), (420, 51331), (490, 43998), (588, 36665), (735, 29332), (980, 21999), (1470, 14666), (2940, 7333)]