21393990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40814010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 34, 45, 51, 54, 59, 79, 85, 90, 102, 118, 135, 153, 158, 170, 177, 237, 255, 270, 295, 306, 354, 395, 459, 474, 510, 531, 590, 711, 765, 790, 885, 918, 1003, 1062, 1185, 1343, 1422, 1530, 1593, 1770, 2006, 2133, 2295, 2370, 2655, 2686, 3009, 3186, 3555, 4029, 4266, 4590, 4661, 5015, 5310, 6018, 6715, 7110, 7965, 8058, 9027, 9322, 10030, 10665, 12087, 13430, 13983, 15045, 15930, 18054, 20145, 21330, 23305, 24174, 27081, 27966, 30090, 36261, 40290, 41949, 45135, 46610, 54162, 60435, 69915, 72522, 79237, 83898, 90270, 120870, 125847, 135405, 139830, 158474, 181305, 209745, 237711, 251694, 270810, 362610, 396185, 419490, 475422, 629235, 713133, 792370, 1188555, 1258470, 1426266, 2139399, 2377110, 3565665, 4278798, 7131330, 10696995, 21393990]

約数ペア:

[(1, 21393990), (2, 10696995), (3, 7131330), (5, 4278798), (6, 3565665), (9, 2377110), (10, 2139399), (15, 1426266), (17, 1258470), (18, 1188555), (27, 792370), (30, 713133), (34, 629235), (45, 475422), (51, 419490), (54, 396185), (59, 362610), (79, 270810), (85, 251694), (90, 237711), (102, 209745), (118, 181305), (135, 158474), (153, 139830), (158, 135405), (170, 125847), (177, 120870), (237, 90270), (255, 83898), (270, 79237), (295, 72522), (306, 69915), (354, 60435), (395, 54162), (459, 46610), (474, 45135), (510, 41949), (531, 40290), (590, 36261), (711, 30090), (765, 27966), (790, 27081), (885, 24174), (918, 23305), (1003, 21330), (1062, 20145), (1185, 18054), (1343, 15930), (1422, 15045), (1530, 13983), (1593, 13430), (1770, 12087), (2006, 10665), (2133, 10030), (2295, 9322), (2370, 9027), (2655, 8058), (2686, 7965), (3009, 7110), (3186, 6715), (3555, 6018), (4029, 5310), (4266, 5015), (4590, 4661)]