21287238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 50637312

約数和(自身を除く): 29350074

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 53, 73, 106, 131, 146, 159, 219, 262, 318, 371, 393, 438, 511, 742, 786, 917, 1022, 1113, 1533, 1834, 2226, 2751, 3066, 3869, 5502, 6943, 7738, 9563, 11607, 13886, 19126, 20829, 23214, 27083, 28689, 41658, 48601, 54166, 57378, 66941, 81249, 97202, 133882, 145803, 162498, 200823, 291606, 401646, 506839, 1013678, 1520517, 3041034, 3547873, 7095746, 10643619, 21287238]

約数ペア:

[(1, 21287238), (2, 10643619), (3, 7095746), (6, 3547873), (7, 3041034), (14, 1520517), (21, 1013678), (42, 506839), (53, 401646), (73, 291606), (106, 200823), (131, 162498), (146, 145803), (159, 133882), (219, 97202), (262, 81249), (318, 66941), (371, 57378), (393, 54166), (438, 48601), (511, 41658), (742, 28689), (786, 27083), (917, 23214), (1022, 20829), (1113, 19126), (1533, 13886), (1834, 11607), (2226, 9563), (2751, 7738), (3066, 6943), (3869, 5502)]