21490686

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 57507840

約数和(自身を除く): 36017154

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 79, 102, 119, 126, 127, 153, 158, 237, 238, 254, 306, 357, 381, 474, 553, 711, 714, 762, 889, 1071, 1106, 1143, 1343, 1422, 1659, 1778, 2142, 2159, 2286, 2667, 2686, 3318, 4029, 4318, 4977, 5334, 6477, 8001, 8058, 9401, 9954, 10033, 12087, 12954, 15113, 16002, 18802, 19431, 20066, 24174, 28203, 30099, 30226, 38862, 45339, 56406, 60198, 70231, 84609, 90297, 90678, 136017, 140462, 169218, 170561, 180594, 210693, 272034, 341122, 421386, 511683, 632079, 1023366, 1193927, 1264158, 1535049, 2387854, 3070098, 3581781, 7163562, 10745343, 21490686]

約数ペア:

[(1, 21490686), (2, 10745343), (3, 7163562), (6, 3581781), (7, 3070098), (9, 2387854), (14, 1535049), (17, 1264158), (18, 1193927), (21, 1023366), (34, 632079), (42, 511683), (51, 421386), (63, 341122), (79, 272034), (102, 210693), (119, 180594), (126, 170561), (127, 169218), (153, 140462), (158, 136017), (237, 90678), (238, 90297), (254, 84609), (306, 70231), (357, 60198), (381, 56406), (474, 45339), (553, 38862), (711, 30226), (714, 30099), (762, 28203), (889, 24174), (1071, 20066), (1106, 19431), (1143, 18802), (1343, 16002), (1422, 15113), (1659, 12954), (1778, 12087), (2142, 10033), (2159, 9954), (2286, 9401), (2667, 8058), (2686, 8001), (3318, 6477), (4029, 5334), (4318, 4977)]