21201210

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 41006790

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 31, 34, 45, 51, 54, 62, 85, 90, 93, 102, 135, 149, 153, 155, 170, 186, 255, 270, 279, 298, 306, 310, 447, 459, 465, 510, 527, 558, 745, 765, 837, 894, 918, 930, 1054, 1341, 1395, 1490, 1530, 1581, 1674, 2235, 2295, 2533, 2635, 2682, 2790, 3162, 4023, 4185, 4470, 4590, 4619, 4743, 5066, 5270, 6705, 7599, 7905, 8046, 8370, 9238, 9486, 12665, 13410, 13857, 14229, 15198, 15810, 20115, 22797, 23095, 23715, 25330, 27714, 28458, 37995, 40230, 41571, 45594, 46190, 47430, 68391, 69285, 71145, 75990, 78523, 83142, 113985, 124713, 136782, 138570, 142290, 157046, 207855, 227970, 235569, 249426, 341955, 392615, 415710, 471138, 623565, 683910, 706707, 785230, 1177845, 1247130, 1413414, 2120121, 2355690, 3533535, 4240242, 7067070, 10600605, 21201210]

約数ペア:

[(1, 21201210), (2, 10600605), (3, 7067070), (5, 4240242), (6, 3533535), (9, 2355690), (10, 2120121), (15, 1413414), (17, 1247130), (18, 1177845), (27, 785230), (30, 706707), (31, 683910), (34, 623565), (45, 471138), (51, 415710), (54, 392615), (62, 341955), (85, 249426), (90, 235569), (93, 227970), (102, 207855), (135, 157046), (149, 142290), (153, 138570), (155, 136782), (170, 124713), (186, 113985), (255, 83142), (270, 78523), (279, 75990), (298, 71145), (306, 69285), (310, 68391), (447, 47430), (459, 46190), (465, 45594), (510, 41571), (527, 40230), (558, 37995), (745, 28458), (765, 27714), (837, 25330), (894, 23715), (918, 23095), (930, 22797), (1054, 20115), (1341, 15810), (1395, 15198), (1490, 14229), (1530, 13857), (1581, 13410), (1674, 12665), (2235, 9486), (2295, 9238), (2533, 8370), (2635, 8046), (2682, 7905), (2790, 7599), (3162, 6705), (4023, 5270), (4185, 5066), (4470, 4743), (4590, 4619)]