20987268

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 50783040

約数和(自身を除く): 29795772

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 89, 129, 172, 178, 258, 267, 356, 457, 516, 534, 914, 1068, 1371, 1828, 2742, 3827, 5484, 7654, 11481, 15308, 19651, 22962, 39302, 40673, 45924, 58953, 78604, 81346, 117906, 122019, 162692, 235812, 244038, 488076, 1748939, 3497878, 5246817, 6995756, 10493634, 20987268]

約数ペア:

[(1, 20987268), (2, 10493634), (3, 6995756), (4, 5246817), (6, 3497878), (12, 1748939), (43, 488076), (86, 244038), (89, 235812), (129, 162692), (172, 122019), (178, 117906), (258, 81346), (267, 78604), (356, 58953), (457, 45924), (516, 40673), (534, 39302), (914, 22962), (1068, 19651), (1371, 15308), (1828, 11481), (2742, 7654), (3827, 5484)]