21380772

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 60318720

約数和(自身を除く): 38937948

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 42, 58, 67, 84, 87, 116, 131, 134, 174, 201, 203, 262, 268, 348, 393, 402, 406, 469, 524, 609, 786, 804, 812, 917, 938, 1218, 1407, 1572, 1834, 1876, 1943, 2436, 2751, 2814, 3668, 3799, 3886, 5502, 5628, 5829, 7598, 7772, 8777, 11004, 11397, 11658, 13601, 15196, 17554, 22794, 23316, 26331, 26593, 27202, 35108, 40803, 45588, 52662, 53186, 54404, 61439, 79779, 81606, 105324, 106372, 122878, 159558, 163212, 184317, 245756, 254533, 319116, 368634, 509066, 737268, 763599, 1018132, 1527198, 1781731, 3054396, 3563462, 5345193, 7126924, 10690386, 21380772]

約数ペア:

[(1, 21380772), (2, 10690386), (3, 7126924), (4, 5345193), (6, 3563462), (7, 3054396), (12, 1781731), (14, 1527198), (21, 1018132), (28, 763599), (29, 737268), (42, 509066), (58, 368634), (67, 319116), (84, 254533), (87, 245756), (116, 184317), (131, 163212), (134, 159558), (174, 122878), (201, 106372), (203, 105324), (262, 81606), (268, 79779), (348, 61439), (393, 54404), (402, 53186), (406, 52662), (469, 45588), (524, 40803), (609, 35108), (786, 27202), (804, 26593), (812, 26331), (917, 23316), (938, 22794), (1218, 17554), (1407, 15196), (1572, 13601), (1834, 11658), (1876, 11397), (1943, 11004), (2436, 8777), (2751, 7772), (2814, 7598), (3668, 5829), (3799, 5628), (3886, 5502)]