20121000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:396

約数の個数: 128

約数和(自身を含む): 66268800

約数和(自身を除く): 46147800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 25, 30, 38, 40, 50, 57, 60, 75, 76, 95, 100, 114, 120, 125, 150, 152, 190, 200, 228, 250, 285, 300, 353, 375, 380, 456, 475, 500, 570, 600, 706, 750, 760, 950, 1000, 1059, 1140, 1412, 1425, 1500, 1765, 1900, 2118, 2280, 2375, 2824, 2850, 3000, 3530, 3800, 4236, 4750, 5295, 5700, 6707, 7060, 7125, 8472, 8825, 9500, 10590, 11400, 13414, 14120, 14250, 17650, 19000, 20121, 21180, 26475, 26828, 28500, 33535, 35300, 40242, 42360, 44125, 52950, 53656, 57000, 67070, 70600, 80484, 88250, 100605, 105900, 132375, 134140, 160968, 167675, 176500, 201210, 211800, 264750, 268280, 335350, 353000, 402420, 503025, 529500, 670700, 804840, 838375, 1006050, 1059000, 1341400, 1676750, 2012100, 2515125, 3353500, 4024200, 5030250, 6707000, 10060500, 20121000]

約数ペア:

[(1, 20121000), (2, 10060500), (3, 6707000), (4, 5030250), (5, 4024200), (6, 3353500), (8, 2515125), (10, 2012100), (12, 1676750), (15, 1341400), (19, 1059000), (20, 1006050), (24, 838375), (25, 804840), (30, 670700), (38, 529500), (40, 503025), (50, 402420), (57, 353000), (60, 335350), (75, 268280), (76, 264750), (95, 211800), (100, 201210), (114, 176500), (120, 167675), (125, 160968), (150, 134140), (152, 132375), (190, 105900), (200, 100605), (228, 88250), (250, 80484), (285, 70600), (300, 67070), (353, 57000), (375, 53656), (380, 52950), (456, 44125), (475, 42360), (500, 40242), (570, 35300), (600, 33535), (706, 28500), (750, 26828), (760, 26475), (950, 21180), (1000, 20121), (1059, 19000), (1140, 17650), (1412, 14250), (1425, 14120), (1500, 13414), (1765, 11400), (1900, 10590), (2118, 9500), (2280, 8825), (2375, 8472), (2824, 7125), (2850, 7060), (3000, 6707), (3530, 5700), (3800, 5295), (4236, 4750)]