20407799790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{479}}^1\times {\mathrm{9661}}^1$

素因数の和:10167

約数の個数: 144

約数和(自身を含む): 61858442880

約数和(自身を除く): 41450643090

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 479, 490, 630, 735, 882, 958, 1437, 1470, 2205, 2395, 2874, 3353, 4311, 4410, 4790, 6706, 7185, 8622, 9661, 10059, 14370, 16765, 19322, 20118, 21555, 23471, 28983, 30177, 33530, 43110, 46942, 48305, 50295, 57966, 60354, 67627, 70413, 86949, 96610, 100590, 117355, 135254, 140826, 144915, 150885, 173898, 202881, 211239, 234710, 289830, 301770, 338135, 352065, 405762, 422478, 434745, 473389, 608643, 676270, 704130, 869490, 946778, 1014405, 1056195, 1217286, 1420167, 2028810, 2112390, 2366945, 2840334, 3043215, 4260501, 4627619, 4733890, 6086430, 7100835, 8521002, 9255238, 13882857, 14201670, 21302505, 23138095, 27765714, 32393333, 41648571, 42605010, 46276190, 64786666, 69414285, 83297142, 97179999, 138828570, 161966665, 194359998, 208242855, 226753331, 291539997, 323933330, 416485710, 453506662, 485899995, 583079994, 680259993, 971799990, 1133766655, 1360519986, 1457699985, 2040779979, 2267533310, 2915399970, 3401299965, 4081559958, 6802599930, 10203899895, 20407799790]

約数ペア:

[(1, 20407799790), (2, 10203899895), (3, 6802599930), (5, 4081559958), (6, 3401299965), (7, 2915399970), (9, 2267533310), (10, 2040779979), (14, 1457699985), (15, 1360519986), (18, 1133766655), (21, 971799990), (30, 680259993), (35, 583079994), (42, 485899995), (45, 453506662), (49, 416485710), (63, 323933330), (70, 291539997), (90, 226753331), (98, 208242855), (105, 194359998), (126, 161966665), (147, 138828570), (210, 97179999), (245, 83297142), (294, 69414285), (315, 64786666), (441, 46276190), (479, 42605010), (490, 41648571), (630, 32393333), (735, 27765714), (882, 23138095), (958, 21302505), (1437, 14201670), (1470, 13882857), (2205, 9255238), (2395, 8521002), (2874, 7100835), (3353, 6086430), (4311, 4733890), (4410, 4627619), (4790, 4260501), (6706, 3043215), (7185, 2840334), (8622, 2366945), (9661, 2112390), (10059, 2028810), (14370, 1420167), (16765, 1217286), (19322, 1056195), (20118, 1014405), (21555, 946778), (23471, 869490), (28983, 704130), (30177, 676270), (33530, 608643), (43110, 473389), (46942, 434745), (48305, 422478), (50295, 405762), (57966, 352065), (60354, 338135), (67627, 301770), (70413, 289830), (86949, 234710), (96610, 211239), (100590, 202881), (117355, 173898), (135254, 150885), (140826, 144915)]