18109420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1087}}^1$

素因数の和:1127

約数の個数: 72

約数和(自身を含む): 46884096

約数和(自身を除く): 28774676

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1087, 1190, 1666, 2174, 2380, 3332, 4165, 4348, 5435, 7609, 8330, 10870, 15218, 16660, 18479, 21740, 30436, 36958, 38045, 53263, 73916, 76090, 92395, 106526, 129353, 152180, 184790, 213052, 258706, 266315, 369580, 517412, 532630, 646765, 905471, 1065260, 1293530, 1810942, 2587060, 3621884, 4527355, 9054710, 18109420]

約数ペア:

[(1, 18109420), (2, 9054710), (4, 4527355), (5, 3621884), (7, 2587060), (10, 1810942), (14, 1293530), (17, 1065260), (20, 905471), (28, 646765), (34, 532630), (35, 517412), (49, 369580), (68, 266315), (70, 258706), (85, 213052), (98, 184790), (119, 152180), (140, 129353), (170, 106526), (196, 92395), (238, 76090), (245, 73916), (340, 53263), (476, 38045), (490, 36958), (595, 30436), (833, 21740), (980, 18479), (1087, 16660), (1190, 15218), (1666, 10870), (2174, 8330), (2380, 7609), (3332, 5435), (4165, 4348)]