221216000

素因数分解:

$2^8\times 5^3\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:285

約数の個数: 144

約数和(自身を含む): 571404288

約数和(自身を除く): 350188288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 223, 248, 250, 256, 310, 320, 400, 446, 496, 500, 620, 640, 775, 800, 892, 992, 1000, 1115, 1240, 1280, 1550, 1600, 1784, 1984, 2000, 2230, 2480, 3100, 3200, 3568, 3875, 3968, 4000, 4460, 4960, 5575, 6200, 6400, 6913, 7136, 7750, 7936, 8000, 8920, 9920, 11150, 12400, 13826, 14272, 15500, 16000, 17840, 19840, 22300, 24800, 27652, 27875, 28544, 31000, 32000, 34565, 35680, 39680, 44600, 49600, 55304, 55750, 57088, 62000, 69130, 71360, 89200, 99200, 110608, 111500, 124000, 138260, 142720, 172825, 178400, 198400, 221216, 223000, 248000, 276520, 285440, 345650, 356800, 442432, 446000, 496000, 553040, 691300, 713600, 864125, 884864, 892000, 992000, 1106080, 1382600, 1427200, 1728250, 1769728, 1784000, 2212160, 2765200, 3456500, 3568000, 4424320, 5530400, 6913000, 7136000, 8848640, 11060800, 13826000, 22121600, 27652000, 44243200, 55304000, 110608000, 221216000]

約数ペア:

[(1, 221216000), (2, 110608000), (4, 55304000), (5, 44243200), (8, 27652000), (10, 22121600), (16, 13826000), (20, 11060800), (25, 8848640), (31, 7136000), (32, 6913000), (40, 5530400), (50, 4424320), (62, 3568000), (64, 3456500), (80, 2765200), (100, 2212160), (124, 1784000), (125, 1769728), (128, 1728250), (155, 1427200), (160, 1382600), (200, 1106080), (223, 992000), (248, 892000), (250, 884864), (256, 864125), (310, 713600), (320, 691300), (400, 553040), (446, 496000), (496, 446000), (500, 442432), (620, 356800), (640, 345650), (775, 285440), (800, 276520), (892, 248000), (992, 223000), (1000, 221216), (1115, 198400), (1240, 178400), (1280, 172825), (1550, 142720), (1600, 138260), (1784, 124000), (1984, 111500), (2000, 110608), (2230, 99200), (2480, 89200), (3100, 71360), (3200, 69130), (3568, 62000), (3875, 57088), (3968, 55750), (4000, 55304), (4460, 49600), (4960, 44600), (5575, 39680), (6200, 35680), (6400, 34565), (6913, 32000), (7136, 31000), (7750, 28544), (7936, 27875), (8000, 27652), (8920, 24800), (9920, 22300), (11150, 19840), (12400, 17840), (13826, 16000), (14272, 15500)]