21178332

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2711}}^1$

素因数の和:2759

約数の個数: 72

約数和(自身を含む): 63178752

約数和(自身を除く): 42000420

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 372, 434, 558, 651, 868, 1116, 1302, 1953, 2604, 2711, 3906, 5422, 7812, 8133, 10844, 16266, 18977, 24399, 32532, 37954, 48798, 56931, 75908, 84041, 97596, 113862, 168082, 170793, 227724, 252123, 336164, 341586, 504246, 588287, 683172, 756369, 1008492, 1176574, 1512738, 1764861, 2353148, 3025476, 3529722, 5294583, 7059444, 10589166, 21178332]

約数ペア:

[(1, 21178332), (2, 10589166), (3, 7059444), (4, 5294583), (6, 3529722), (7, 3025476), (9, 2353148), (12, 1764861), (14, 1512738), (18, 1176574), (21, 1008492), (28, 756369), (31, 683172), (36, 588287), (42, 504246), (62, 341586), (63, 336164), (84, 252123), (93, 227724), (124, 170793), (126, 168082), (186, 113862), (217, 97596), (252, 84041), (279, 75908), (372, 56931), (434, 48798), (558, 37954), (651, 32532), (868, 24399), (1116, 18977), (1302, 16266), (1953, 10844), (2604, 8133), (2711, 7812), (3906, 5422)]