20635965

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 23272515

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 29, 35, 45, 63, 81, 87, 105, 135, 145, 189, 203, 251, 261, 315, 405, 435, 567, 609, 753, 783, 945, 1015, 1255, 1305, 1757, 1827, 2259, 2349, 2835, 3045, 3765, 3915, 5271, 5481, 6777, 7279, 8785, 9135, 11295, 11745, 15813, 16443, 20331, 21837, 26355, 27405, 33885, 36395, 47439, 50953, 65511, 79065, 82215, 101655, 109185, 142317, 152859, 196533, 237195, 254765, 327555, 458577, 589599, 711585, 764295, 982665, 1375731, 2292885, 2947995, 4127193, 6878655, 20635965]

約数ペア:

[(1, 20635965), (3, 6878655), (5, 4127193), (7, 2947995), (9, 2292885), (15, 1375731), (21, 982665), (27, 764295), (29, 711585), (35, 589599), (45, 458577), (63, 327555), (81, 254765), (87, 237195), (105, 196533), (135, 152859), (145, 142317), (189, 109185), (203, 101655), (251, 82215), (261, 79065), (315, 65511), (405, 50953), (435, 47439), (567, 36395), (609, 33885), (753, 27405), (783, 26355), (945, 21837), (1015, 20331), (1255, 16443), (1305, 15813), (1757, 11745), (1827, 11295), (2259, 9135), (2349, 8785), (2835, 7279), (3045, 6777), (3765, 5481), (3915, 5271)]