20820450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:352

約数の個数: 96

約数和(自身を含む): 59996160

約数和(自身を除く): 39175710

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 79, 105, 150, 158, 175, 210, 237, 251, 350, 395, 474, 502, 525, 553, 753, 790, 1050, 1106, 1185, 1255, 1506, 1659, 1757, 1975, 2370, 2510, 2765, 3318, 3514, 3765, 3950, 5271, 5530, 5925, 6275, 7530, 8295, 8785, 10542, 11850, 12550, 13825, 16590, 17570, 18825, 19829, 26355, 27650, 37650, 39658, 41475, 43925, 52710, 59487, 82950, 87850, 99145, 118974, 131775, 138803, 198290, 263550, 277606, 297435, 416409, 495725, 594870, 694015, 832818, 991450, 1388030, 1487175, 2082045, 2974350, 3470075, 4164090, 6940150, 10410225, 20820450]

約数ペア:

[(1, 20820450), (2, 10410225), (3, 6940150), (5, 4164090), (6, 3470075), (7, 2974350), (10, 2082045), (14, 1487175), (15, 1388030), (21, 991450), (25, 832818), (30, 694015), (35, 594870), (42, 495725), (50, 416409), (70, 297435), (75, 277606), (79, 263550), (105, 198290), (150, 138803), (158, 131775), (175, 118974), (210, 99145), (237, 87850), (251, 82950), (350, 59487), (395, 52710), (474, 43925), (502, 41475), (525, 39658), (553, 37650), (753, 27650), (790, 26355), (1050, 19829), (1106, 18825), (1185, 17570), (1255, 16590), (1506, 13825), (1659, 12550), (1757, 11850), (1975, 10542), (2370, 8785), (2510, 8295), (2765, 7530), (3318, 6275), (3514, 5925), (3765, 5530), (3950, 5271)]