19727480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{433}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 47809440

約数和(自身を除く): 28081960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 67, 68, 85, 134, 136, 170, 268, 335, 340, 433, 536, 670, 680, 866, 1139, 1340, 1732, 2165, 2278, 2680, 3464, 4330, 4556, 5695, 7361, 8660, 9112, 11390, 14722, 17320, 22780, 29011, 29444, 36805, 45560, 58022, 58888, 73610, 116044, 145055, 147220, 232088, 290110, 294440, 493187, 580220, 986374, 1160440, 1972748, 2465935, 3945496, 4931870, 9863740, 19727480]

約数ペア:

[(1, 19727480), (2, 9863740), (4, 4931870), (5, 3945496), (8, 2465935), (10, 1972748), (17, 1160440), (20, 986374), (34, 580220), (40, 493187), (67, 294440), (68, 290110), (85, 232088), (134, 147220), (136, 145055), (170, 116044), (268, 73610), (335, 58888), (340, 58022), (433, 45560), (536, 36805), (670, 29444), (680, 29011), (866, 22780), (1139, 17320), (1340, 14722), (1732, 11390), (2165, 9112), (2278, 8660), (2680, 7361), (3464, 5695), (4330, 4556)]