20965140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2377}}^1$

素因数の和:2406

約数の個数: 108

約数和(自身を含む): 74008116

約数和(自身を除く): 53042976

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, 2377, 2940, 4410, 4754, 7131, 8820, 9508, 11885, 14262, 16639, 21393, 23770, 28524, 33278, 35655, 42786, 47540, 49917, 66556, 71310, 83195, 85572, 99834, 106965, 116473, 142620, 149751, 166390, 199668, 213930, 232946, 249585, 299502, 332780, 349419, 427860, 465892, 499170, 582365, 599004, 698838, 748755, 998340, 1048257, 1164730, 1397676, 1497510, 1747095, 2096514, 2329460, 2995020, 3494190, 4193028, 5241285, 6988380, 10482570, 20965140]

約数ペア:

[(1, 20965140), (2, 10482570), (3, 6988380), (4, 5241285), (5, 4193028), (6, 3494190), (7, 2995020), (9, 2329460), (10, 2096514), (12, 1747095), (14, 1497510), (15, 1397676), (18, 1164730), (20, 1048257), (21, 998340), (28, 748755), (30, 698838), (35, 599004), (36, 582365), (42, 499170), (45, 465892), (49, 427860), (60, 349419), (63, 332780), (70, 299502), (84, 249585), (90, 232946), (98, 213930), (105, 199668), (126, 166390), (140, 149751), (147, 142620), (180, 116473), (196, 106965), (210, 99834), (245, 85572), (252, 83195), (294, 71310), (315, 66556), (420, 49917), (441, 47540), (490, 42786), (588, 35655), (630, 33278), (735, 28524), (882, 23770), (980, 21393), (1260, 16639), (1470, 14262), (1764, 11885), (2205, 9508), (2377, 8820), (2940, 7131), (4410, 4754)]