21400596

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{521}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 62322624

約数和(自身を除く): 40922028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 163, 252, 326, 489, 521, 652, 978, 1042, 1141, 1467, 1563, 1956, 2084, 2282, 2934, 3126, 3423, 3647, 4564, 4689, 5868, 6252, 6846, 7294, 9378, 10269, 10941, 13692, 14588, 18756, 20538, 21882, 32823, 41076, 43764, 65646, 84923, 131292, 169846, 254769, 339692, 509538, 594461, 764307, 1019076, 1188922, 1528614, 1783383, 2377844, 3057228, 3566766, 5350149, 7133532, 10700298, 21400596]

約数ペア:

[(1, 21400596), (2, 10700298), (3, 7133532), (4, 5350149), (6, 3566766), (7, 3057228), (9, 2377844), (12, 1783383), (14, 1528614), (18, 1188922), (21, 1019076), (28, 764307), (36, 594461), (42, 509538), (63, 339692), (84, 254769), (126, 169846), (163, 131292), (252, 84923), (326, 65646), (489, 43764), (521, 41076), (652, 32823), (978, 21882), (1042, 20538), (1141, 18756), (1467, 14588), (1563, 13692), (1956, 10941), (2084, 10269), (2282, 9378), (2934, 7294), (3126, 6846), (3423, 6252), (3647, 5868), (4564, 4689)]