21199815

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 46964736

約数和(自身を除く): 25764921

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 31, 35, 39, 45, 63, 65, 91, 93, 105, 117, 155, 167, 195, 217, 273, 279, 315, 403, 455, 465, 501, 585, 651, 819, 835, 1085, 1169, 1209, 1365, 1395, 1503, 1953, 2015, 2171, 2505, 2821, 3255, 3507, 3627, 4095, 5177, 5845, 6045, 6513, 7515, 8463, 9765, 10521, 10855, 14105, 15197, 15531, 17535, 18135, 19539, 25389, 25885, 32565, 36239, 42315, 45591, 46593, 52605, 67301, 75985, 77655, 97695, 108717, 126945, 136773, 181195, 201903, 227955, 232965, 326151, 336505, 471107, 543585, 605709, 683865, 1009515, 1413321, 1630755, 2355535, 3028545, 4239963, 7066605, 21199815]

約数ペア:

[(1, 21199815), (3, 7066605), (5, 4239963), (7, 3028545), (9, 2355535), (13, 1630755), (15, 1413321), (21, 1009515), (31, 683865), (35, 605709), (39, 543585), (45, 471107), (63, 336505), (65, 326151), (91, 232965), (93, 227955), (105, 201903), (117, 181195), (155, 136773), (167, 126945), (195, 108717), (217, 97695), (273, 77655), (279, 75985), (315, 67301), (403, 52605), (455, 46593), (465, 45591), (501, 42315), (585, 36239), (651, 32565), (819, 25885), (835, 25389), (1085, 19539), (1169, 18135), (1209, 17535), (1365, 15531), (1395, 15197), (1503, 14105), (1953, 10855), (2015, 10521), (2171, 9765), (2505, 8463), (2821, 7515), (3255, 6513), (3507, 6045), (3627, 5845), (4095, 5177)]