21379218

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{367}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 52285440

約数和(自身を除く): 30906222

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 73, 114, 133, 146, 219, 266, 367, 399, 438, 511, 734, 798, 1022, 1101, 1387, 1533, 2202, 2569, 2774, 3066, 4161, 5138, 6973, 7707, 8322, 9709, 13946, 15414, 19418, 20919, 26791, 29127, 41838, 48811, 53582, 58254, 80373, 97622, 146433, 160746, 187537, 292866, 375074, 509029, 562611, 1018058, 1125222, 1527087, 3054174, 3563203, 7126406, 10689609, 21379218]

約数ペア:

[(1, 21379218), (2, 10689609), (3, 7126406), (6, 3563203), (7, 3054174), (14, 1527087), (19, 1125222), (21, 1018058), (38, 562611), (42, 509029), (57, 375074), (73, 292866), (114, 187537), (133, 160746), (146, 146433), (219, 97622), (266, 80373), (367, 58254), (399, 53582), (438, 48811), (511, 41838), (734, 29127), (798, 26791), (1022, 20919), (1101, 19418), (1387, 15414), (1533, 13946), (2202, 9709), (2569, 8322), (2774, 7707), (3066, 6973), (4161, 5138)]