21997656

素因数分解:

$2^3\times 3^4\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:510

約数の個数: 80

約数和(自身を含む): 62508600

約数和(自身を除く): 40510944

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 83, 108, 162, 166, 216, 249, 324, 332, 409, 498, 648, 664, 747, 818, 996, 1227, 1494, 1636, 1992, 2241, 2454, 2988, 3272, 3681, 4482, 4908, 5976, 6723, 7362, 8964, 9816, 11043, 13446, 14724, 17928, 22086, 26892, 29448, 33129, 33947, 44172, 53784, 66258, 67894, 88344, 101841, 132516, 135788, 203682, 265032, 271576, 305523, 407364, 611046, 814728, 916569, 1222092, 1833138, 2444184, 2749707, 3666276, 5499414, 7332552, 10998828, 21997656]

約数ペア:

[(1, 21997656), (2, 10998828), (3, 7332552), (4, 5499414), (6, 3666276), (8, 2749707), (9, 2444184), (12, 1833138), (18, 1222092), (24, 916569), (27, 814728), (36, 611046), (54, 407364), (72, 305523), (81, 271576), (83, 265032), (108, 203682), (162, 135788), (166, 132516), (216, 101841), (249, 88344), (324, 67894), (332, 66258), (409, 53784), (498, 44172), (648, 33947), (664, 33129), (747, 29448), (818, 26892), (996, 22086), (1227, 17928), (1494, 14724), (1636, 13446), (1992, 11043), (2241, 9816), (2454, 8964), (2988, 7362), (3272, 6723), (3681, 5976), (4482, 4908)]