219879990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:427

約数の個数: 144

約数和(自身を含む): 640615248

約数和(自身を除く): 420735258

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 61, 66, 90, 99, 110, 121, 122, 165, 183, 198, 242, 305, 330, 331, 363, 366, 495, 549, 605, 610, 662, 671, 726, 915, 990, 993, 1089, 1098, 1210, 1342, 1655, 1815, 1830, 1986, 2013, 2178, 2745, 2979, 3310, 3355, 3630, 3641, 4026, 4965, 5445, 5490, 5958, 6039, 6710, 7282, 7381, 9930, 10065, 10890, 10923, 12078, 14762, 14895, 18205, 20130, 20191, 21846, 22143, 29790, 30195, 32769, 36410, 36905, 40051, 40382, 44286, 54615, 60390, 60573, 65538, 66429, 73810, 80102, 100955, 109230, 110715, 120153, 121146, 132858, 163845, 181719, 200255, 201910, 221430, 222101, 240306, 302865, 327690, 332145, 360459, 363438, 400510, 444202, 600765, 605730, 664290, 666303, 720918, 908595, 1110505, 1201530, 1332606, 1802295, 1817190, 1998909, 2221010, 2443111, 3331515, 3604590, 3997818, 4886222, 6663030, 7329333, 9994545, 12215555, 14658666, 19989090, 21987999, 24431110, 36646665, 43975998, 73293330, 109939995, 219879990]

約数ペア:

[(1, 219879990), (2, 109939995), (3, 73293330), (5, 43975998), (6, 36646665), (9, 24431110), (10, 21987999), (11, 19989090), (15, 14658666), (18, 12215555), (22, 9994545), (30, 7329333), (33, 6663030), (45, 4886222), (55, 3997818), (61, 3604590), (66, 3331515), (90, 2443111), (99, 2221010), (110, 1998909), (121, 1817190), (122, 1802295), (165, 1332606), (183, 1201530), (198, 1110505), (242, 908595), (305, 720918), (330, 666303), (331, 664290), (363, 605730), (366, 600765), (495, 444202), (549, 400510), (605, 363438), (610, 360459), (662, 332145), (671, 327690), (726, 302865), (915, 240306), (990, 222101), (993, 221430), (1089, 201910), (1098, 200255), (1210, 181719), (1342, 163845), (1655, 132858), (1815, 121146), (1830, 120153), (1986, 110715), (2013, 109230), (2178, 100955), (2745, 80102), (2979, 73810), (3310, 66429), (3355, 65538), (3630, 60573), (3641, 60390), (4026, 54615), (4965, 44286), (5445, 40382), (5490, 40051), (5958, 36905), (6039, 36410), (6710, 32769), (7282, 30195), (7381, 29790), (9930, 22143), (10065, 21846), (10890, 20191), (10923, 20130), (12078, 18205), (14762, 14895)]