20963720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30829}}^1$

素因数の和:30857

約数の個数: 32

約数和(自身を含む): 49944600

約数和(自身を除く): 28980880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30829, 61658, 123316, 154145, 246632, 308290, 524093, 616580, 1048186, 1233160, 2096372, 2620465, 4192744, 5240930, 10481860, 20963720]

約数ペア:

[(1, 20963720), (2, 10481860), (4, 5240930), (5, 4192744), (8, 2620465), (10, 2096372), (17, 1233160), (20, 1048186), (34, 616580), (40, 524093), (68, 308290), (85, 246632), (136, 154145), (170, 123316), (340, 61658), (680, 30829)]