21239764

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 28434476

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 43, 46, 52, 59, 86, 91, 92, 118, 161, 172, 182, 236, 299, 301, 322, 364, 413, 559, 598, 602, 644, 767, 826, 989, 1118, 1196, 1204, 1357, 1534, 1652, 1978, 2093, 2236, 2537, 2714, 3068, 3913, 3956, 4186, 5074, 5369, 5428, 6923, 7826, 8372, 9499, 10148, 10738, 12857, 13846, 15652, 17641, 17759, 18998, 21476, 25714, 27692, 32981, 35282, 35518, 37996, 51428, 58351, 65962, 70564, 71036, 89999, 116702, 123487, 131924, 179998, 230867, 233404, 246974, 359996, 408457, 461734, 493948, 758563, 816914, 923468, 1517126, 1633828, 3034252, 5309941, 10619882, 21239764]

約数ペア:

[(1, 21239764), (2, 10619882), (4, 5309941), (7, 3034252), (13, 1633828), (14, 1517126), (23, 923468), (26, 816914), (28, 758563), (43, 493948), (46, 461734), (52, 408457), (59, 359996), (86, 246974), (91, 233404), (92, 230867), (118, 179998), (161, 131924), (172, 123487), (182, 116702), (236, 89999), (299, 71036), (301, 70564), (322, 65962), (364, 58351), (413, 51428), (559, 37996), (598, 35518), (602, 35282), (644, 32981), (767, 27692), (826, 25714), (989, 21476), (1118, 18998), (1196, 17759), (1204, 17641), (1357, 15652), (1534, 13846), (1652, 12857), (1978, 10738), (2093, 10148), (2236, 9499), (2537, 8372), (2714, 7826), (3068, 6923), (3913, 5428), (3956, 5369), (4186, 5074)]