21291255855

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{20879}}^1$

素因数の和:20981

約数の個数: 96

約数和(自身を含む): 41276252160

約数和(自身を除く): 19984996305

約数列:

[1, 3, 5, 9, 15, 17, 31, 43, 45, 51, 85, 93, 129, 153, 155, 215, 255, 279, 387, 465, 527, 645, 731, 765, 1333, 1395, 1581, 1935, 2193, 2635, 3655, 3999, 4743, 6579, 6665, 7905, 10965, 11997, 19995, 20879, 22661, 23715, 32895, 59985, 62637, 67983, 104395, 113305, 187911, 203949, 313185, 339915, 354943, 647249, 897797, 939555, 1019745, 1064829, 1774715, 1941747, 2693391, 3194487, 3236245, 4488985, 5324145, 5825241, 8080173, 9708735, 11003233, 13466955, 15262549, 15972435, 27831707, 29126205, 33009699, 40400865, 45787647, 55016165, 76312745, 83495121, 99029097, 137362941, 139158535, 165048495, 228938235, 250485363, 417475605, 473139019, 495145485, 686814705, 1252426815, 1419417057, 2365695095, 4258251171, 7097085285, 21291255855]

約数ペア:

[(1, 21291255855), (3, 7097085285), (5, 4258251171), (9, 2365695095), (15, 1419417057), (17, 1252426815), (31, 686814705), (43, 495145485), (45, 473139019), (51, 417475605), (85, 250485363), (93, 228938235), (129, 165048495), (153, 139158535), (155, 137362941), (215, 99029097), (255, 83495121), (279, 76312745), (387, 55016165), (465, 45787647), (527, 40400865), (645, 33009699), (731, 29126205), (765, 27831707), (1333, 15972435), (1395, 15262549), (1581, 13466955), (1935, 11003233), (2193, 9708735), (2635, 8080173), (3655, 5825241), (3999, 5324145), (4743, 4488985), (6579, 3236245), (6665, 3194487), (7905, 2693391), (10965, 1941747), (11997, 1774715), (19995, 1064829), (20879, 1019745), (22661, 939555), (23715, 897797), (32895, 647249), (59985, 354943), (62637, 339915), (67983, 313185), (104395, 203949), (113305, 187911)]