21308028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 39655812

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 41, 42, 46, 69, 82, 84, 92, 123, 138, 161, 164, 246, 269, 276, 287, 322, 483, 492, 538, 574, 644, 807, 861, 943, 966, 1076, 1148, 1614, 1722, 1883, 1886, 1932, 2829, 3228, 3444, 3766, 3772, 5649, 5658, 6187, 6601, 7532, 11029, 11298, 11316, 12374, 13202, 18561, 19803, 22058, 22596, 24748, 26404, 33087, 37122, 39606, 43309, 44116, 66174, 74244, 77203, 79212, 86618, 129927, 132348, 154406, 173236, 231609, 253667, 259854, 308812, 463218, 507334, 519708, 761001, 926436, 1014668, 1522002, 1775669, 3044004, 3551338, 5327007, 7102676, 10654014, 21308028]

約数ペア:

[(1, 21308028), (2, 10654014), (3, 7102676), (4, 5327007), (6, 3551338), (7, 3044004), (12, 1775669), (14, 1522002), (21, 1014668), (23, 926436), (28, 761001), (41, 519708), (42, 507334), (46, 463218), (69, 308812), (82, 259854), (84, 253667), (92, 231609), (123, 173236), (138, 154406), (161, 132348), (164, 129927), (246, 86618), (269, 79212), (276, 77203), (287, 74244), (322, 66174), (483, 44116), (492, 43309), (538, 39606), (574, 37122), (644, 33087), (807, 26404), (861, 24748), (943, 22596), (966, 22058), (1076, 19803), (1148, 18561), (1614, 13202), (1722, 12374), (1883, 11316), (1886, 11298), (1932, 11029), (2829, 7532), (3228, 6601), (3444, 6187), (3766, 5658), (3772, 5649)]