21985760

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 96

約数和(自身を含む): 56337120

約数和(自身を除く): 34351360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 59, 68, 80, 85, 118, 136, 137, 160, 170, 236, 272, 274, 295, 340, 472, 544, 548, 590, 680, 685, 944, 1003, 1096, 1180, 1360, 1370, 1888, 2006, 2192, 2329, 2360, 2720, 2740, 4012, 4384, 4658, 4720, 5015, 5480, 8024, 8083, 9316, 9440, 10030, 10960, 11645, 16048, 16166, 18632, 20060, 21920, 23290, 32096, 32332, 37264, 40120, 40415, 46580, 64664, 74528, 80240, 80830, 93160, 129328, 137411, 160480, 161660, 186320, 258656, 274822, 323320, 372640, 549644, 646640, 687055, 1099288, 1293280, 1374110, 2198576, 2748220, 4397152, 5496440, 10992880, 21985760]

約数ペア:

[(1, 21985760), (2, 10992880), (4, 5496440), (5, 4397152), (8, 2748220), (10, 2198576), (16, 1374110), (17, 1293280), (20, 1099288), (32, 687055), (34, 646640), (40, 549644), (59, 372640), (68, 323320), (80, 274822), (85, 258656), (118, 186320), (136, 161660), (137, 160480), (160, 137411), (170, 129328), (236, 93160), (272, 80830), (274, 80240), (295, 74528), (340, 64664), (472, 46580), (544, 40415), (548, 40120), (590, 37264), (680, 32332), (685, 32096), (944, 23290), (1003, 21920), (1096, 20060), (1180, 18632), (1360, 16166), (1370, 16048), (1888, 11645), (2006, 10960), (2192, 10030), (2329, 9440), (2360, 9316), (2720, 8083), (2740, 8024), (4012, 5480), (4384, 5015), (4658, 4720)]