21005166

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:146

約数の個数: 128

約数和(自身を含む): 57286656

約数和(自身を除く): 36281490

約数列:

[1, 2, 3, 6, 7, 13, 14, 17, 21, 26, 31, 34, 39, 42, 51, 62, 73, 78, 91, 93, 102, 119, 146, 182, 186, 217, 219, 221, 238, 273, 357, 403, 434, 438, 442, 511, 527, 546, 651, 663, 714, 806, 949, 1022, 1054, 1209, 1241, 1302, 1326, 1533, 1547, 1581, 1898, 2263, 2418, 2482, 2821, 2847, 3066, 3094, 3162, 3689, 3723, 4526, 4641, 5642, 5694, 6643, 6789, 6851, 7378, 7446, 8463, 8687, 9282, 11067, 13286, 13578, 13702, 15841, 16133, 16926, 17374, 19929, 20553, 22134, 26061, 29419, 31682, 32266, 38471, 39858, 41106, 47523, 47957, 48399, 52122, 58838, 76942, 88257, 95046, 95914, 96798, 112931, 115413, 143871, 176514, 205933, 225862, 230826, 269297, 287742, 338793, 411866, 500123, 538594, 617799, 677586, 807891, 1000246, 1235598, 1500369, 1615782, 3000738, 3500861, 7001722, 10502583, 21005166]

約数ペア:

[(1, 21005166), (2, 10502583), (3, 7001722), (6, 3500861), (7, 3000738), (13, 1615782), (14, 1500369), (17, 1235598), (21, 1000246), (26, 807891), (31, 677586), (34, 617799), (39, 538594), (42, 500123), (51, 411866), (62, 338793), (73, 287742), (78, 269297), (91, 230826), (93, 225862), (102, 205933), (119, 176514), (146, 143871), (182, 115413), (186, 112931), (217, 96798), (219, 95914), (221, 95046), (238, 88257), (273, 76942), (357, 58838), (403, 52122), (434, 48399), (438, 47957), (442, 47523), (511, 41106), (527, 39858), (546, 38471), (651, 32266), (663, 31682), (714, 29419), (806, 26061), (949, 22134), (1022, 20553), (1054, 19929), (1209, 17374), (1241, 16926), (1302, 16133), (1326, 15841), (1533, 13702), (1547, 13578), (1581, 13286), (1898, 11067), (2263, 9282), (2418, 8687), (2482, 8463), (2821, 7446), (2847, 7378), (3066, 6851), (3094, 6789), (3162, 6643), (3689, 5694), (3723, 5642), (4526, 4641)]