21305760

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{373}}^1$

素因数の和:415

約数の個数: 192

約数和(自身を含む): 81430272

約数和(自身を除く): 60124512

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 96, 102, 105, 112, 119, 120, 136, 140, 160, 168, 170, 204, 210, 224, 238, 240, 255, 272, 280, 336, 340, 357, 373, 408, 420, 476, 480, 510, 544, 560, 595, 672, 680, 714, 746, 816, 840, 952, 1020, 1119, 1120, 1190, 1360, 1428, 1492, 1632, 1680, 1785, 1865, 1904, 2040, 2238, 2380, 2611, 2720, 2856, 2984, 3360, 3570, 3730, 3808, 4080, 4476, 4760, 5222, 5595, 5712, 5968, 6341, 7140, 7460, 7833, 8160, 8952, 9520, 10444, 11190, 11424, 11936, 12682, 13055, 14280, 14920, 15666, 17904, 19023, 19040, 20888, 22380, 25364, 26110, 28560, 29840, 31332, 31705, 35808, 38046, 39165, 41776, 44387, 44760, 50728, 52220, 57120, 59680, 62664, 63410, 76092, 78330, 83552, 88774, 89520, 95115, 101456, 104440, 125328, 126820, 133161, 152184, 156660, 177548, 179040, 190230, 202912, 208880, 221935, 250656, 253640, 266322, 304368, 313320, 355096, 380460, 417760, 443870, 507280, 532644, 608736, 626640, 665805, 710192, 760920, 887740, 1014560, 1065288, 1253280, 1331610, 1420384, 1521840, 1775480, 2130576, 2663220, 3043680, 3550960, 4261152, 5326440, 7101920, 10652880, 21305760]

約数ペア:

[(1, 21305760), (2, 10652880), (3, 7101920), (4, 5326440), (5, 4261152), (6, 3550960), (7, 3043680), (8, 2663220), (10, 2130576), (12, 1775480), (14, 1521840), (15, 1420384), (16, 1331610), (17, 1253280), (20, 1065288), (21, 1014560), (24, 887740), (28, 760920), (30, 710192), (32, 665805), (34, 626640), (35, 608736), (40, 532644), (42, 507280), (48, 443870), (51, 417760), (56, 380460), (60, 355096), (68, 313320), (70, 304368), (80, 266322), (84, 253640), (85, 250656), (96, 221935), (102, 208880), (105, 202912), (112, 190230), (119, 179040), (120, 177548), (136, 156660), (140, 152184), (160, 133161), (168, 126820), (170, 125328), (204, 104440), (210, 101456), (224, 95115), (238, 89520), (240, 88774), (255, 83552), (272, 78330), (280, 76092), (336, 63410), (340, 62664), (357, 59680), (373, 57120), (408, 52220), (420, 50728), (476, 44760), (480, 44387), (510, 41776), (544, 39165), (560, 38046), (595, 35808), (672, 31705), (680, 31332), (714, 29840), (746, 28560), (816, 26110), (840, 25364), (952, 22380), (1020, 20888), (1119, 19040), (1120, 19023), (1190, 17904), (1360, 15666), (1428, 14920), (1492, 14280), (1632, 13055), (1680, 12682), (1785, 11936), (1865, 11424), (1904, 11190), (2040, 10444), (2238, 9520), (2380, 8952), (2611, 8160), (2720, 7833), (2856, 7460), (2984, 7140), (3360, 6341), (3570, 5968), (3730, 5712), (3808, 5595), (4080, 5222), (4476, 4760)]