19954940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3089}}^1$

素因数の和:3134

約数の個数: 48

約数和(自身を含む): 46720800

約数和(自身を除く): 26765860

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3089, 3230, 6178, 6460, 12356, 15445, 30890, 52513, 58691, 61780, 105026, 117382, 210052, 234764, 262565, 293455, 525130, 586910, 997747, 1050260, 1173820, 1995494, 3990988, 4988735, 9977470, 19954940]

約数ペア:

[(1, 19954940), (2, 9977470), (4, 4988735), (5, 3990988), (10, 1995494), (17, 1173820), (19, 1050260), (20, 997747), (34, 586910), (38, 525130), (68, 293455), (76, 262565), (85, 234764), (95, 210052), (170, 117382), (190, 105026), (323, 61780), (340, 58691), (380, 52513), (646, 30890), (1292, 15445), (1615, 12356), (3089, 6460), (3230, 6178)]