19353775

素因数分解:

$5^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 29214400

約数和(自身を除く): 9860625

約数列:

[1, 5, 7, 25, 35, 37, 49, 61, 175, 185, 245, 259, 305, 343, 427, 925, 1225, 1295, 1525, 1715, 1813, 2135, 2257, 2989, 6475, 8575, 9065, 10675, 11285, 12691, 14945, 15799, 20923, 45325, 56425, 63455, 74725, 78995, 104615, 110593, 317275, 394975, 523075, 552965, 774151, 2764825, 3870755, 19353775]

約数ペア:

[(1, 19353775), (5, 3870755), (7, 2764825), (25, 774151), (35, 552965), (37, 523075), (49, 394975), (61, 317275), (175, 110593), (185, 104615), (245, 78995), (259, 74725), (305, 63455), (343, 56425), (427, 45325), (925, 20923), (1225, 15799), (1295, 14945), (1525, 12691), (1715, 11285), (1813, 10675), (2135, 9065), (2257, 8575), (2989, 6475)]