21787974

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{757}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 53484480

約数和(自身を除く): 31696506

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 41, 54, 78, 82, 117, 123, 234, 246, 351, 369, 533, 702, 738, 757, 1066, 1107, 1514, 1599, 2214, 2271, 3198, 4542, 4797, 6813, 9594, 9841, 13626, 14391, 19682, 20439, 28782, 29523, 31037, 40878, 59046, 62074, 88569, 93111, 177138, 186222, 265707, 279333, 403481, 531414, 558666, 806962, 837999, 1210443, 1675998, 2420886, 3631329, 7262658, 10893987, 21787974]

約数ペア:

[(1, 21787974), (2, 10893987), (3, 7262658), (6, 3631329), (9, 2420886), (13, 1675998), (18, 1210443), (26, 837999), (27, 806962), (39, 558666), (41, 531414), (54, 403481), (78, 279333), (82, 265707), (117, 186222), (123, 177138), (234, 93111), (246, 88569), (351, 62074), (369, 59046), (533, 40878), (702, 31037), (738, 29523), (757, 28782), (1066, 20439), (1107, 19682), (1514, 14391), (1599, 13626), (2214, 9841), (2271, 9594), (3198, 6813), (4542, 4797)]