21220416

素因数分解:

$2^6\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:321

約数の個数: 168

約数和(自身を含む): 73436480

約数和(自身を除く): 52216064

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 32, 36, 38, 42, 48, 56, 57, 63, 64, 72, 76, 84, 96, 112, 114, 126, 133, 144, 152, 168, 171, 192, 224, 228, 252, 266, 277, 288, 304, 336, 342, 399, 448, 456, 504, 532, 554, 576, 608, 672, 684, 798, 831, 912, 1008, 1064, 1108, 1197, 1216, 1344, 1368, 1596, 1662, 1824, 1939, 2016, 2128, 2216, 2394, 2493, 2736, 3192, 3324, 3648, 3878, 4032, 4256, 4432, 4788, 4986, 5263, 5472, 5817, 6384, 6648, 7756, 8512, 8864, 9576, 9972, 10526, 10944, 11634, 12768, 13296, 15512, 15789, 17451, 17728, 19152, 19944, 21052, 23268, 25536, 26592, 31024, 31578, 34902, 36841, 38304, 39888, 42104, 46536, 47367, 53184, 62048, 63156, 69804, 73682, 76608, 79776, 84208, 93072, 94734, 110523, 124096, 126312, 139608, 147364, 159552, 168416, 186144, 189468, 221046, 252624, 279216, 294728, 331569, 336832, 372288, 378936, 442092, 505248, 558432, 589456, 663138, 757872, 884184, 1010496, 1116864, 1178912, 1326276, 1515744, 1768368, 2357824, 2652552, 3031488, 3536736, 5305104, 7073472, 10610208, 21220416]

約数ペア:

[(1, 21220416), (2, 10610208), (3, 7073472), (4, 5305104), (6, 3536736), (7, 3031488), (8, 2652552), (9, 2357824), (12, 1768368), (14, 1515744), (16, 1326276), (18, 1178912), (19, 1116864), (21, 1010496), (24, 884184), (28, 757872), (32, 663138), (36, 589456), (38, 558432), (42, 505248), (48, 442092), (56, 378936), (57, 372288), (63, 336832), (64, 331569), (72, 294728), (76, 279216), (84, 252624), (96, 221046), (112, 189468), (114, 186144), (126, 168416), (133, 159552), (144, 147364), (152, 139608), (168, 126312), (171, 124096), (192, 110523), (224, 94734), (228, 93072), (252, 84208), (266, 79776), (277, 76608), (288, 73682), (304, 69804), (336, 63156), (342, 62048), (399, 53184), (448, 47367), (456, 46536), (504, 42104), (532, 39888), (554, 38304), (576, 36841), (608, 34902), (672, 31578), (684, 31024), (798, 26592), (831, 25536), (912, 23268), (1008, 21052), (1064, 19944), (1108, 19152), (1197, 17728), (1216, 17451), (1344, 15789), (1368, 15512), (1596, 13296), (1662, 12768), (1824, 11634), (1939, 10944), (2016, 10526), (2128, 9972), (2216, 9576), (2394, 8864), (2493, 8512), (2736, 7756), (3192, 6648), (3324, 6384), (3648, 5817), (3878, 5472), (4032, 5263), (4256, 4986), (4432, 4788)]