19989090

素因数分解:

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

素因数の和:416

約数の個数: 96

約数和(自身を含む): 57799872

約数和(自身を除く): 37810782

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 61, 66, 90, 99, 110, 122, 165, 183, 198, 305, 330, 331, 366, 495, 549, 610, 662, 671, 915, 990, 993, 1098, 1342, 1655, 1830, 1986, 2013, 2745, 2979, 3310, 3355, 3641, 4026, 4965, 5490, 5958, 6039, 6710, 7282, 9930, 10065, 10923, 12078, 14895, 18205, 20130, 20191, 21846, 29790, 30195, 32769, 36410, 40382, 54615, 60390, 60573, 65538, 100955, 109230, 121146, 163845, 181719, 201910, 222101, 302865, 327690, 363438, 444202, 605730, 666303, 908595, 1110505, 1332606, 1817190, 1998909, 2221010, 3331515, 3997818, 6663030, 9994545, 19989090]

約数ペア:

[(1, 19989090), (2, 9994545), (3, 6663030), (5, 3997818), (6, 3331515), (9, 2221010), (10, 1998909), (11, 1817190), (15, 1332606), (18, 1110505), (22, 908595), (30, 666303), (33, 605730), (45, 444202), (55, 363438), (61, 327690), (66, 302865), (90, 222101), (99, 201910), (110, 181719), (122, 163845), (165, 121146), (183, 109230), (198, 100955), (305, 65538), (330, 60573), (331, 60390), (366, 54615), (495, 40382), (549, 36410), (610, 32769), (662, 30195), (671, 29790), (915, 21846), (990, 20191), (993, 20130), (1098, 18205), (1342, 14895), (1655, 12078), (1830, 10923), (1986, 10065), (2013, 9930), (2745, 7282), (2979, 6710), (3310, 6039), (3355, 5958), (3641, 5490), (4026, 4965)]