21146240

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 55814400

約数和(自身を除く): 34668160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 37, 38, 40, 47, 64, 74, 76, 80, 94, 95, 128, 148, 152, 160, 185, 188, 190, 235, 296, 304, 320, 370, 376, 380, 470, 592, 608, 640, 703, 740, 752, 760, 893, 940, 1184, 1216, 1406, 1480, 1504, 1520, 1739, 1786, 1880, 2368, 2432, 2812, 2960, 3008, 3040, 3478, 3515, 3572, 3760, 4465, 4736, 5624, 5920, 6016, 6080, 6956, 7030, 7144, 7520, 8695, 8930, 11248, 11840, 12160, 13912, 14060, 14288, 15040, 17390, 17860, 22496, 23680, 27824, 28120, 28576, 30080, 33041, 34780, 35720, 44992, 55648, 56240, 57152, 66082, 69560, 71440, 89984, 111296, 112480, 114304, 132164, 139120, 142880, 165205, 222592, 224960, 264328, 278240, 285760, 330410, 449920, 528656, 556480, 571520, 660820, 1057312, 1112960, 1321640, 2114624, 2643280, 4229248, 5286560, 10573120, 21146240]

約数ペア:

[(1, 21146240), (2, 10573120), (4, 5286560), (5, 4229248), (8, 2643280), (10, 2114624), (16, 1321640), (19, 1112960), (20, 1057312), (32, 660820), (37, 571520), (38, 556480), (40, 528656), (47, 449920), (64, 330410), (74, 285760), (76, 278240), (80, 264328), (94, 224960), (95, 222592), (128, 165205), (148, 142880), (152, 139120), (160, 132164), (185, 114304), (188, 112480), (190, 111296), (235, 89984), (296, 71440), (304, 69560), (320, 66082), (370, 57152), (376, 56240), (380, 55648), (470, 44992), (592, 35720), (608, 34780), (640, 33041), (703, 30080), (740, 28576), (752, 28120), (760, 27824), (893, 23680), (940, 22496), (1184, 17860), (1216, 17390), (1406, 15040), (1480, 14288), (1504, 14060), (1520, 13912), (1739, 12160), (1786, 11840), (1880, 11248), (2368, 8930), (2432, 8695), (2812, 7520), (2960, 7144), (3008, 7030), (3040, 6956), (3478, 6080), (3515, 6016), (3572, 5920), (3760, 5624), (4465, 4736)]