21454361840

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{23981}}^1$

素因数の和:24258

約数の個数: 80

約数和(自身を含む): 51065544096

約数和(自身を除く): 29611182256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 211, 212, 265, 422, 424, 530, 844, 848, 1055, 1060, 1688, 2110, 2120, 3376, 4220, 4240, 8440, 11183, 16880, 22366, 23981, 44732, 47962, 55915, 89464, 95924, 111830, 119905, 178928, 191848, 223660, 239810, 383696, 447320, 479620, 894640, 959240, 1270993, 1918480, 2541986, 5059991, 5083972, 6354965, 10119982, 10167944, 12709930, 20239964, 20335888, 25299955, 25419860, 40479928, 50599910, 50839720, 80959856, 101199820, 101679440, 202399640, 268179523, 404799280, 536359046, 1072718092, 1340897615, 2145436184, 2681795230, 4290872368, 5363590460, 10727180920, 21454361840]

約数ペア:

[(1, 21454361840), (2, 10727180920), (4, 5363590460), (5, 4290872368), (8, 2681795230), (10, 2145436184), (16, 1340897615), (20, 1072718092), (40, 536359046), (53, 404799280), (80, 268179523), (106, 202399640), (211, 101679440), (212, 101199820), (265, 80959856), (422, 50839720), (424, 50599910), (530, 40479928), (844, 25419860), (848, 25299955), (1055, 20335888), (1060, 20239964), (1688, 12709930), (2110, 10167944), (2120, 10119982), (3376, 6354965), (4220, 5083972), (4240, 5059991), (8440, 2541986), (11183, 1918480), (16880, 1270993), (22366, 959240), (23981, 894640), (44732, 479620), (47962, 447320), (55915, 383696), (89464, 239810), (95924, 223660), (111830, 191848), (119905, 178928)]