21678012

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{773}}^1$

素因数の和:843

約数の個数: 72

約数和(自身を含む): 59164560

約数和(自身を除く): 37486548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 41, 57, 76, 82, 114, 123, 164, 171, 228, 246, 342, 369, 492, 684, 738, 773, 779, 1476, 1546, 1558, 2319, 2337, 3092, 3116, 4638, 4674, 6957, 7011, 9276, 9348, 13914, 14022, 14687, 27828, 28044, 29374, 31693, 44061, 58748, 63386, 88122, 95079, 126772, 132183, 176244, 190158, 264366, 285237, 380316, 528732, 570474, 602167, 1140948, 1204334, 1806501, 2408668, 3613002, 5419503, 7226004, 10839006, 21678012]

約数ペア:

[(1, 21678012), (2, 10839006), (3, 7226004), (4, 5419503), (6, 3613002), (9, 2408668), (12, 1806501), (18, 1204334), (19, 1140948), (36, 602167), (38, 570474), (41, 528732), (57, 380316), (76, 285237), (82, 264366), (114, 190158), (123, 176244), (164, 132183), (171, 126772), (228, 95079), (246, 88122), (342, 63386), (369, 58748), (492, 44061), (684, 31693), (738, 29374), (773, 28044), (779, 27828), (1476, 14687), (1546, 14022), (1558, 13914), (2319, 9348), (2337, 9276), (3092, 7011), (3116, 6957), (4638, 4674)]