21000407090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{24391}}^1$

素因数の和:24627

約数の個数: 64

約数和(自身を含む): 42044002560

約数和(自身を除く): 21043595470

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 179, 185, 358, 370, 481, 895, 962, 1790, 2327, 2405, 4654, 4810, 6623, 11635, 13246, 23270, 24391, 33115, 48782, 66230, 86099, 121955, 172198, 243910, 317083, 430495, 634166, 860990, 902467, 1585415, 1804934, 3170830, 4365989, 4512335, 8731978, 9024670, 11732071, 21829945, 23464142, 43659890, 56757857, 58660355, 113515714, 117320710, 161541593, 283789285, 323083186, 567578570, 807707965, 1615415930, 2100040709, 4200081418, 10500203545, 21000407090]

約数ペア:

[(1, 21000407090), (2, 10500203545), (5, 4200081418), (10, 2100040709), (13, 1615415930), (26, 807707965), (37, 567578570), (65, 323083186), (74, 283789285), (130, 161541593), (179, 117320710), (185, 113515714), (358, 58660355), (370, 56757857), (481, 43659890), (895, 23464142), (962, 21829945), (1790, 11732071), (2327, 9024670), (2405, 8731978), (4654, 4512335), (4810, 4365989), (6623, 3170830), (11635, 1804934), (13246, 1585415), (23270, 902467), (24391, 860990), (33115, 634166), (48782, 430495), (66230, 317083), (86099, 243910), (121955, 172198)]