205211020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:252

約数の個数: 144

約数和(自身を含む): 537788160

約数和(自身を除く): 332577140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 103, 107, 133, 140, 190, 196, 206, 214, 245, 266, 380, 412, 428, 490, 515, 532, 535, 665, 721, 749, 931, 980, 1030, 1070, 1330, 1442, 1498, 1862, 1957, 2033, 2060, 2140, 2660, 2884, 2996, 3605, 3724, 3745, 3914, 4066, 4655, 5047, 5243, 7210, 7490, 7828, 8132, 9310, 9785, 10094, 10165, 10486, 11021, 13699, 14231, 14420, 14980, 18620, 19570, 20188, 20330, 20972, 22042, 25235, 26215, 27398, 28462, 39140, 40660, 44084, 50470, 52430, 54796, 55105, 56924, 68495, 71155, 77147, 95893, 99617, 100940, 104860, 110210, 136990, 142310, 154294, 191786, 199234, 209399, 220420, 273980, 284620, 308588, 383572, 385735, 398468, 418798, 479465, 498085, 540029, 771470, 837596, 958930, 996170, 1046995, 1080058, 1465793, 1542940, 1917860, 1992340, 2093990, 2160116, 2700145, 2931586, 4187980, 5400290, 5863172, 7328965, 10260551, 10800580, 14657930, 20521102, 29315860, 41042204, 51302755, 102605510, 205211020]

約数ペア:

[(1, 205211020), (2, 102605510), (4, 51302755), (5, 41042204), (7, 29315860), (10, 20521102), (14, 14657930), (19, 10800580), (20, 10260551), (28, 7328965), (35, 5863172), (38, 5400290), (49, 4187980), (70, 2931586), (76, 2700145), (95, 2160116), (98, 2093990), (103, 1992340), (107, 1917860), (133, 1542940), (140, 1465793), (190, 1080058), (196, 1046995), (206, 996170), (214, 958930), (245, 837596), (266, 771470), (380, 540029), (412, 498085), (428, 479465), (490, 418798), (515, 398468), (532, 385735), (535, 383572), (665, 308588), (721, 284620), (749, 273980), (931, 220420), (980, 209399), (1030, 199234), (1070, 191786), (1330, 154294), (1442, 142310), (1498, 136990), (1862, 110210), (1957, 104860), (2033, 100940), (2060, 99617), (2140, 95893), (2660, 77147), (2884, 71155), (2996, 68495), (3605, 56924), (3724, 55105), (3745, 54796), (3914, 52430), (4066, 50470), (4655, 44084), (5047, 40660), (5243, 39140), (7210, 28462), (7490, 27398), (7828, 26215), (8132, 25235), (9310, 22042), (9785, 20972), (10094, 20330), (10165, 20188), (10486, 19570), (11021, 18620), (13699, 14980), (14231, 14420)]