21284172

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:192

約数の個数: 144

約数和(自身を含む): 67878720

約数和(自身を除く): 46594548

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 73, 78, 84, 89, 91, 117, 126, 146, 156, 178, 182, 219, 234, 252, 267, 273, 292, 356, 364, 438, 468, 511, 534, 546, 623, 657, 801, 819, 876, 949, 1022, 1068, 1092, 1157, 1246, 1314, 1533, 1602, 1638, 1869, 1898, 2044, 2314, 2492, 2628, 2847, 3066, 3204, 3276, 3471, 3738, 3796, 4599, 4628, 5607, 5694, 6132, 6497, 6643, 6942, 7476, 8099, 8541, 9198, 10413, 11214, 11388, 12994, 13286, 13884, 16198, 17082, 18396, 19491, 19929, 20826, 22428, 24297, 25988, 26572, 32396, 34164, 38982, 39858, 41652, 45479, 48594, 58473, 59787, 72891, 77964, 79716, 84461, 90958, 97188, 116946, 119574, 136437, 145782, 168922, 181916, 233892, 239148, 253383, 272874, 291564, 337844, 409311, 506766, 545748, 591227, 760149, 818622, 1013532, 1182454, 1520298, 1637244, 1773681, 2364908, 3040596, 3547362, 5321043, 7094724, 10642086, 21284172]

約数ペア:

[(1, 21284172), (2, 10642086), (3, 7094724), (4, 5321043), (6, 3547362), (7, 3040596), (9, 2364908), (12, 1773681), (13, 1637244), (14, 1520298), (18, 1182454), (21, 1013532), (26, 818622), (28, 760149), (36, 591227), (39, 545748), (42, 506766), (52, 409311), (63, 337844), (73, 291564), (78, 272874), (84, 253383), (89, 239148), (91, 233892), (117, 181916), (126, 168922), (146, 145782), (156, 136437), (178, 119574), (182, 116946), (219, 97188), (234, 90958), (252, 84461), (267, 79716), (273, 77964), (292, 72891), (356, 59787), (364, 58473), (438, 48594), (468, 45479), (511, 41652), (534, 39858), (546, 38982), (623, 34164), (657, 32396), (801, 26572), (819, 25988), (876, 24297), (949, 22428), (1022, 20826), (1068, 19929), (1092, 19491), (1157, 18396), (1246, 17082), (1314, 16198), (1533, 13884), (1602, 13286), (1638, 12994), (1869, 11388), (1898, 11214), (2044, 10413), (2314, 9198), (2492, 8541), (2628, 8099), (2847, 7476), (3066, 6942), (3204, 6643), (3276, 6497), (3471, 6132), (3738, 5694), (3796, 5607), (4599, 4628)]