20878128

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{1559}}^1$

素因数の和:1607

約数の個数: 80

約数和(自身を含む): 61900800

約数和(自身を除く): 41022672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 62, 72, 93, 108, 124, 144, 186, 216, 248, 279, 372, 432, 496, 558, 744, 837, 1116, 1488, 1559, 1674, 2232, 3118, 3348, 4464, 4677, 6236, 6696, 9354, 12472, 13392, 14031, 18708, 24944, 28062, 37416, 42093, 48329, 56124, 74832, 84186, 96658, 112248, 144987, 168372, 193316, 224496, 289974, 336744, 386632, 434961, 579948, 673488, 773264, 869922, 1159896, 1304883, 1739844, 2319792, 2609766, 3479688, 5219532, 6959376, 10439064, 20878128]

約数ペア:

[(1, 20878128), (2, 10439064), (3, 6959376), (4, 5219532), (6, 3479688), (8, 2609766), (9, 2319792), (12, 1739844), (16, 1304883), (18, 1159896), (24, 869922), (27, 773264), (31, 673488), (36, 579948), (48, 434961), (54, 386632), (62, 336744), (72, 289974), (93, 224496), (108, 193316), (124, 168372), (144, 144987), (186, 112248), (216, 96658), (248, 84186), (279, 74832), (372, 56124), (432, 48329), (496, 42093), (558, 37416), (744, 28062), (837, 24944), (1116, 18708), (1488, 14031), (1559, 13392), (1674, 12472), (2232, 9354), (3118, 6696), (3348, 6236), (4464, 4677)]