21615776

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{571}}^1$

素因数の和:614

約数の個数: 72

約数和(自身を含む): 52756704

約数和(自身を除く): 31140928

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 169, 182, 208, 224, 338, 364, 416, 571, 676, 728, 1142, 1183, 1352, 1456, 2284, 2366, 2704, 2912, 3997, 4568, 4732, 5408, 7423, 7994, 9136, 9464, 14846, 15988, 18272, 18928, 29692, 31976, 37856, 51961, 59384, 63952, 96499, 103922, 118768, 127904, 192998, 207844, 237536, 385996, 415688, 675493, 771992, 831376, 1350986, 1543984, 1662752, 2701972, 3087968, 5403944, 10807888, 21615776]

約数ペア:

[(1, 21615776), (2, 10807888), (4, 5403944), (7, 3087968), (8, 2701972), (13, 1662752), (14, 1543984), (16, 1350986), (26, 831376), (28, 771992), (32, 675493), (52, 415688), (56, 385996), (91, 237536), (104, 207844), (112, 192998), (169, 127904), (182, 118768), (208, 103922), (224, 96499), (338, 63952), (364, 59384), (416, 51961), (571, 37856), (676, 31976), (728, 29692), (1142, 18928), (1183, 18272), (1352, 15988), (1456, 14846), (2284, 9464), (2366, 9136), (2704, 7994), (2912, 7423), (3997, 5408), (4568, 4732)]