21123522

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 96

約数和(自身を含む): 56339712

約数和(自身を除く): 35216190

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 37, 42, 46, 63, 69, 74, 111, 126, 138, 161, 197, 207, 222, 259, 322, 333, 394, 414, 483, 518, 591, 666, 777, 851, 966, 1182, 1379, 1449, 1554, 1702, 1773, 2331, 2553, 2758, 2898, 3546, 4137, 4531, 4662, 5106, 5957, 7289, 7659, 8274, 9062, 11914, 12411, 13593, 14578, 15318, 17871, 21867, 24822, 27186, 31717, 35742, 40779, 43734, 51023, 53613, 63434, 65601, 81558, 95151, 102046, 107226, 131202, 153069, 167647, 190302, 285453, 306138, 335294, 459207, 502941, 570906, 918414, 1005882, 1173529, 1508823, 2347058, 3017646, 3520587, 7041174, 10561761, 21123522]

約数ペア:

[(1, 21123522), (2, 10561761), (3, 7041174), (6, 3520587), (7, 3017646), (9, 2347058), (14, 1508823), (18, 1173529), (21, 1005882), (23, 918414), (37, 570906), (42, 502941), (46, 459207), (63, 335294), (69, 306138), (74, 285453), (111, 190302), (126, 167647), (138, 153069), (161, 131202), (197, 107226), (207, 102046), (222, 95151), (259, 81558), (322, 65601), (333, 63434), (394, 53613), (414, 51023), (483, 43734), (518, 40779), (591, 35742), (666, 31717), (777, 27186), (851, 24822), (966, 21867), (1182, 17871), (1379, 15318), (1449, 14578), (1554, 13593), (1702, 12411), (1773, 11914), (2331, 9062), (2553, 8274), (2758, 7659), (2898, 7289), (3546, 5957), (4137, 5106), (4531, 4662)]