21095820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{503}}^1$

素因数の和:751

約数の個数: 72

約数和(自身を含む): 64393056

約数和(自身を除く): 43297236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 233, 466, 503, 699, 932, 1006, 1165, 1398, 1509, 2012, 2097, 2330, 2515, 2796, 3018, 3495, 4194, 4527, 4660, 5030, 6036, 6990, 7545, 8388, 9054, 10060, 10485, 13980, 15090, 18108, 20970, 22635, 30180, 41940, 45270, 90540, 117199, 234398, 351597, 468796, 585995, 703194, 1054791, 1171990, 1406388, 1757985, 2109582, 2343980, 3515970, 4219164, 5273955, 7031940, 10547910, 21095820]

約数ペア:

[(1, 21095820), (2, 10547910), (3, 7031940), (4, 5273955), (5, 4219164), (6, 3515970), (9, 2343980), (10, 2109582), (12, 1757985), (15, 1406388), (18, 1171990), (20, 1054791), (30, 703194), (36, 585995), (45, 468796), (60, 351597), (90, 234398), (180, 117199), (233, 90540), (466, 45270), (503, 41940), (699, 30180), (932, 22635), (1006, 20970), (1165, 18108), (1398, 15090), (1509, 13980), (2012, 10485), (2097, 10060), (2330, 9054), (2515, 8388), (2796, 7545), (3018, 6990), (3495, 6036), (4194, 5030), (4527, 4660)]