21745386

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:180

約数の個数: 96

約数和(自身を含む): 54949440

約数和(自身を除く): 33204054

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 67, 73, 78, 114, 117, 134, 146, 171, 201, 219, 234, 247, 342, 402, 438, 494, 603, 657, 741, 871, 949, 1206, 1273, 1314, 1387, 1482, 1742, 1898, 2223, 2546, 2613, 2774, 2847, 3819, 4161, 4446, 4891, 5226, 5694, 7638, 7839, 8322, 8541, 9782, 11457, 12483, 14673, 15678, 16549, 17082, 18031, 22914, 24966, 29346, 33098, 36062, 44019, 49647, 54093, 63583, 88038, 92929, 99294, 108186, 127166, 148941, 162279, 185858, 190749, 278787, 297882, 324558, 381498, 557574, 572247, 836361, 1144494, 1208077, 1672722, 2416154, 3624231, 7248462, 10872693, 21745386]

約数ペア:

[(1, 21745386), (2, 10872693), (3, 7248462), (6, 3624231), (9, 2416154), (13, 1672722), (18, 1208077), (19, 1144494), (26, 836361), (38, 572247), (39, 557574), (57, 381498), (67, 324558), (73, 297882), (78, 278787), (114, 190749), (117, 185858), (134, 162279), (146, 148941), (171, 127166), (201, 108186), (219, 99294), (234, 92929), (247, 88038), (342, 63583), (402, 54093), (438, 49647), (494, 44019), (603, 36062), (657, 33098), (741, 29346), (871, 24966), (949, 22914), (1206, 18031), (1273, 17082), (1314, 16549), (1387, 15678), (1482, 14673), (1742, 12483), (1898, 11457), (2223, 9782), (2546, 8541), (2613, 8322), (2774, 7839), (2847, 7638), (3819, 5694), (4161, 5226), (4446, 4891)]