21999615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:101

約数の個数: 96

約数和(自身を含む): 44126208

約数和(自身を除く): 22126593

約数列:

[1, 3, 5, 11, 15, 17, 23, 31, 33, 51, 55, 69, 85, 93, 115, 121, 155, 165, 187, 253, 255, 341, 345, 363, 391, 465, 527, 561, 605, 713, 759, 935, 1023, 1173, 1265, 1581, 1705, 1815, 1955, 2057, 2139, 2635, 2783, 2805, 3565, 3751, 3795, 4301, 5115, 5797, 5865, 6171, 7843, 7905, 8349, 10285, 10695, 11253, 12121, 12903, 13915, 17391, 18755, 21505, 23529, 28985, 30855, 36363, 39215, 41745, 47311, 56265, 60605, 63767, 64515, 86273, 86955, 117645, 133331, 141933, 181815, 191301, 236555, 258819, 318835, 399993, 431365, 666655, 709665, 956505, 1294095, 1466641, 1999965, 4399923, 7333205, 21999615]

約数ペア:

[(1, 21999615), (3, 7333205), (5, 4399923), (11, 1999965), (15, 1466641), (17, 1294095), (23, 956505), (31, 709665), (33, 666655), (51, 431365), (55, 399993), (69, 318835), (85, 258819), (93, 236555), (115, 191301), (121, 181815), (155, 141933), (165, 133331), (187, 117645), (253, 86955), (255, 86273), (341, 64515), (345, 63767), (363, 60605), (391, 56265), (465, 47311), (527, 41745), (561, 39215), (605, 36363), (713, 30855), (759, 28985), (935, 23529), (1023, 21505), (1173, 18755), (1265, 17391), (1581, 13915), (1705, 12903), (1815, 12121), (1955, 11253), (2057, 10695), (2139, 10285), (2635, 8349), (2783, 7905), (2805, 7843), (3565, 6171), (3751, 5865), (3795, 5797), (4301, 5115)]