21295890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1$

素因数の和:477

約数の個数: 144

約数和(自身を含む): 70424640

約数和(自身を除く): 49128750

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 49, 55, 63, 66, 70, 77, 90, 98, 99, 105, 110, 126, 147, 154, 165, 198, 210, 231, 245, 294, 315, 330, 385, 439, 441, 462, 490, 495, 539, 630, 693, 735, 770, 878, 882, 990, 1078, 1155, 1317, 1386, 1470, 1617, 2195, 2205, 2310, 2634, 2695, 3073, 3234, 3465, 3951, 4390, 4410, 4829, 4851, 5390, 6146, 6585, 6930, 7902, 8085, 9219, 9658, 9702, 13170, 14487, 15365, 16170, 18438, 19755, 21511, 24145, 24255, 27657, 28974, 30730, 33803, 39510, 43022, 43461, 46095, 48290, 48510, 55314, 64533, 67606, 72435, 86922, 92190, 101409, 107555, 129066, 138285, 144870, 169015, 193599, 202818, 215110, 217305, 236621, 276570, 304227, 322665, 338030, 387198, 434610, 473242, 507045, 608454, 645330, 709863, 967995, 1014090, 1183105, 1419726, 1521135, 1935990, 2129589, 2366210, 3042270, 3549315, 4259178, 7098630, 10647945, 21295890]

約数ペア:

[(1, 21295890), (2, 10647945), (3, 7098630), (5, 4259178), (6, 3549315), (7, 3042270), (9, 2366210), (10, 2129589), (11, 1935990), (14, 1521135), (15, 1419726), (18, 1183105), (21, 1014090), (22, 967995), (30, 709863), (33, 645330), (35, 608454), (42, 507045), (45, 473242), (49, 434610), (55, 387198), (63, 338030), (66, 322665), (70, 304227), (77, 276570), (90, 236621), (98, 217305), (99, 215110), (105, 202818), (110, 193599), (126, 169015), (147, 144870), (154, 138285), (165, 129066), (198, 107555), (210, 101409), (231, 92190), (245, 86922), (294, 72435), (315, 67606), (330, 64533), (385, 55314), (439, 48510), (441, 48290), (462, 46095), (490, 43461), (495, 43022), (539, 39510), (630, 33803), (693, 30730), (735, 28974), (770, 27657), (878, 24255), (882, 24145), (990, 21511), (1078, 19755), (1155, 18438), (1317, 16170), (1386, 15365), (1470, 14487), (1617, 13170), (2195, 9702), (2205, 9658), (2310, 9219), (2634, 8085), (2695, 7902), (3073, 6930), (3234, 6585), (3465, 6146), (3951, 5390), (4390, 4851), (4410, 4829)]