21597828

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1597}}^1$

素因数の和:1641

約数の個数: 72

約数和(自身を含む): 61209792

約数和(自身を除く): 39611964

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 49, 69, 84, 92, 98, 138, 147, 161, 196, 276, 294, 322, 483, 588, 644, 966, 1127, 1597, 1932, 2254, 3194, 3381, 4508, 4791, 6388, 6762, 9582, 11179, 13524, 19164, 22358, 33537, 36731, 44716, 67074, 73462, 78253, 110193, 134148, 146924, 156506, 220386, 234759, 257117, 313012, 440772, 469518, 514234, 771351, 939036, 1028468, 1542702, 1799819, 3085404, 3599638, 5399457, 7199276, 10798914, 21597828]

約数ペア:

[(1, 21597828), (2, 10798914), (3, 7199276), (4, 5399457), (6, 3599638), (7, 3085404), (12, 1799819), (14, 1542702), (21, 1028468), (23, 939036), (28, 771351), (42, 514234), (46, 469518), (49, 440772), (69, 313012), (84, 257117), (92, 234759), (98, 220386), (138, 156506), (147, 146924), (161, 134148), (196, 110193), (276, 78253), (294, 73462), (322, 67074), (483, 44716), (588, 36731), (644, 33537), (966, 22358), (1127, 19164), (1597, 13524), (1932, 11179), (2254, 9582), (3194, 6762), (3381, 6388), (4508, 4791)]