21735520

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 96

約数和(自身を含む): 55683936

約数和(自身を除く): 33948416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 61, 68, 80, 85, 122, 131, 136, 160, 170, 244, 262, 272, 305, 340, 488, 524, 544, 610, 655, 680, 976, 1037, 1048, 1220, 1310, 1360, 1952, 2074, 2096, 2227, 2440, 2620, 2720, 4148, 4192, 4454, 4880, 5185, 5240, 7991, 8296, 8908, 9760, 10370, 10480, 11135, 15982, 16592, 17816, 20740, 20960, 22270, 31964, 33184, 35632, 39955, 41480, 44540, 63928, 71264, 79910, 82960, 89080, 127856, 135847, 159820, 165920, 178160, 255712, 271694, 319640, 356320, 543388, 639280, 679235, 1086776, 1278560, 1358470, 2173552, 2716940, 4347104, 5433880, 10867760, 21735520]

約数ペア:

[(1, 21735520), (2, 10867760), (4, 5433880), (5, 4347104), (8, 2716940), (10, 2173552), (16, 1358470), (17, 1278560), (20, 1086776), (32, 679235), (34, 639280), (40, 543388), (61, 356320), (68, 319640), (80, 271694), (85, 255712), (122, 178160), (131, 165920), (136, 159820), (160, 135847), (170, 127856), (244, 89080), (262, 82960), (272, 79910), (305, 71264), (340, 63928), (488, 44540), (524, 41480), (544, 39955), (610, 35632), (655, 33184), (680, 31964), (976, 22270), (1037, 20960), (1048, 20740), (1220, 17816), (1310, 16592), (1360, 15982), (1952, 11135), (2074, 10480), (2096, 10370), (2227, 9760), (2440, 8908), (2620, 8296), (2720, 7991), (4148, 5240), (4192, 5185), (4454, 4880)]