21384272

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{773}}^1$

素因数の和:820

約数の個数: 80

約数和(自身を含む): 53746560

約数和(自身を除く): 32362288

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 52, 56, 76, 91, 104, 112, 133, 152, 182, 208, 247, 266, 304, 364, 494, 532, 728, 773, 988, 1064, 1456, 1546, 1729, 1976, 2128, 3092, 3458, 3952, 5411, 6184, 6916, 10049, 10822, 12368, 13832, 14687, 20098, 21644, 27664, 29374, 40196, 43288, 58748, 70343, 80392, 86576, 102809, 117496, 140686, 160784, 190931, 205618, 234992, 281372, 381862, 411236, 562744, 763724, 822472, 1125488, 1336517, 1527448, 1644944, 2673034, 3054896, 5346068, 10692136, 21384272]

約数ペア:

[(1, 21384272), (2, 10692136), (4, 5346068), (7, 3054896), (8, 2673034), (13, 1644944), (14, 1527448), (16, 1336517), (19, 1125488), (26, 822472), (28, 763724), (38, 562744), (52, 411236), (56, 381862), (76, 281372), (91, 234992), (104, 205618), (112, 190931), (133, 160784), (152, 140686), (182, 117496), (208, 102809), (247, 86576), (266, 80392), (304, 70343), (364, 58748), (494, 43288), (532, 40196), (728, 29374), (773, 27664), (988, 21644), (1064, 20098), (1456, 14687), (1546, 13832), (1729, 12368), (1976, 10822), (2128, 10049), (3092, 6916), (3458, 6184), (3952, 5411)]