64985985

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 126434880

約数和(自身を除く): 61448895

約数列:

[1, 3, 5, 9, 15, 17, 19, 45, 51, 57, 85, 95, 153, 171, 255, 263, 285, 289, 323, 765, 789, 855, 867, 969, 1315, 1445, 1615, 2367, 2601, 2907, 3945, 4335, 4471, 4845, 4997, 5491, 11835, 13005, 13413, 14535, 14991, 16473, 22355, 24985, 27455, 40239, 44973, 49419, 67065, 74955, 76007, 82365, 84949, 201195, 224865, 228021, 247095, 254847, 380035, 424745, 684063, 764541, 1140105, 1274235, 1444133, 3420315, 3822705, 4332399, 7220665, 12997197, 21661995, 64985985]

約数ペア:

[(1, 64985985), (3, 21661995), (5, 12997197), (9, 7220665), (15, 4332399), (17, 3822705), (19, 3420315), (45, 1444133), (51, 1274235), (57, 1140105), (85, 764541), (95, 684063), (153, 424745), (171, 380035), (255, 254847), (263, 247095), (285, 228021), (289, 224865), (323, 201195), (765, 84949), (789, 82365), (855, 76007), (867, 74955), (969, 67065), (1315, 49419), (1445, 44973), (1615, 40239), (2367, 27455), (2601, 24985), (2907, 22355), (3945, 16473), (4335, 14991), (4471, 14535), (4845, 13413), (4997, 13005), (5491, 11835)]