201990945

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1626

約数の個数: 64

約数和(自身を含む): 375943680

約数和(自身を除く): 173952735

約数列:

[1, 3, 5, 13, 15, 23, 29, 39, 65, 69, 87, 115, 145, 195, 299, 345, 377, 435, 667, 897, 1131, 1495, 1553, 1885, 2001, 3335, 4485, 4659, 5655, 7765, 8671, 10005, 20189, 23295, 26013, 35719, 43355, 45037, 60567, 100945, 107157, 130065, 135111, 178595, 225185, 302835, 464347, 535785, 585481, 675555, 1035851, 1393041, 1756443, 2321735, 2927405, 3107553, 5179255, 6965205, 8782215, 13466063, 15537765, 40398189, 67330315, 201990945]

約数ペア:

[(1, 201990945), (3, 67330315), (5, 40398189), (13, 15537765), (15, 13466063), (23, 8782215), (29, 6965205), (39, 5179255), (65, 3107553), (69, 2927405), (87, 2321735), (115, 1756443), (145, 1393041), (195, 1035851), (299, 675555), (345, 585481), (377, 535785), (435, 464347), (667, 302835), (897, 225185), (1131, 178595), (1495, 135111), (1553, 130065), (1885, 107157), (2001, 100945), (3335, 60567), (4485, 45037), (4659, 43355), (5655, 35719), (7765, 26013), (8671, 23295), (10005, 20189)]