28409220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{3221}}^1$

素因数の和:3250

約数の個数: 108

約数和(自身を含む): 100275084

約数和(自身を除く): 71865864

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 3221, 4410, 6442, 8820, 9663, 12884, 16105, 19326, 22547, 28989, 32210, 38652, 45094, 48315, 57978, 64420, 67641, 90188, 96630, 112735, 115956, 135282, 144945, 157829, 193260, 202923, 225470, 270564, 289890, 315658, 338205, 405846, 450940, 473487, 579780, 631316, 676410, 789145, 811692, 946974, 1014615, 1352820, 1420461, 1578290, 1893948, 2029230, 2367435, 2840922, 3156580, 4058460, 4734870, 5681844, 7102305, 9469740, 14204610, 28409220]

約数ペア:

[(1, 28409220), (2, 14204610), (3, 9469740), (4, 7102305), (5, 5681844), (6, 4734870), (7, 4058460), (9, 3156580), (10, 2840922), (12, 2367435), (14, 2029230), (15, 1893948), (18, 1578290), (20, 1420461), (21, 1352820), (28, 1014615), (30, 946974), (35, 811692), (36, 789145), (42, 676410), (45, 631316), (49, 579780), (60, 473487), (63, 450940), (70, 405846), (84, 338205), (90, 315658), (98, 289890), (105, 270564), (126, 225470), (140, 202923), (147, 193260), (180, 157829), (196, 144945), (210, 135282), (245, 115956), (252, 112735), (294, 96630), (315, 90188), (420, 67641), (441, 64420), (490, 57978), (588, 48315), (630, 45094), (735, 38652), (882, 32210), (980, 28989), (1260, 22547), (1470, 19326), (1764, 16105), (2205, 12884), (2940, 9663), (3221, 8820), (4410, 6442)]