18729760

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2389}}^1$

素因数の和:2418

約数の個数: 72

約数和(自身を含む): 51494940

約数和(自身を除く): 32765180

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2389, 3920, 4778, 7840, 9556, 11945, 16723, 19112, 23890, 33446, 38224, 47780, 66892, 76448, 83615, 95560, 117061, 133784, 167230, 191120, 234122, 267568, 334460, 382240, 468244, 535136, 585305, 668920, 936488, 1170610, 1337840, 1872976, 2341220, 2675680, 3745952, 4682440, 9364880, 18729760]

約数ペア:

[(1, 18729760), (2, 9364880), (4, 4682440), (5, 3745952), (7, 2675680), (8, 2341220), (10, 1872976), (14, 1337840), (16, 1170610), (20, 936488), (28, 668920), (32, 585305), (35, 535136), (40, 468244), (49, 382240), (56, 334460), (70, 267568), (80, 234122), (98, 191120), (112, 167230), (140, 133784), (160, 117061), (196, 95560), (224, 83615), (245, 76448), (280, 66892), (392, 47780), (490, 38224), (560, 33446), (784, 23890), (980, 19112), (1120, 16723), (1568, 11945), (1960, 9556), (2389, 7840), (3920, 4778)]