19806880

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1567}}^1$

素因数の和:1661

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 27609440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1567, 1580, 2528, 3134, 3160, 6268, 6320, 7835, 12536, 12640, 15670, 25072, 31340, 50144, 62680, 123793, 125360, 247586, 250720, 495172, 618965, 990344, 1237930, 1980688, 2475860, 3961376, 4951720, 9903440, 19806880]

約数ペア:

[(1, 19806880), (2, 9903440), (4, 4951720), (5, 3961376), (8, 2475860), (10, 1980688), (16, 1237930), (20, 990344), (32, 618965), (40, 495172), (79, 250720), (80, 247586), (158, 125360), (160, 123793), (316, 62680), (395, 50144), (632, 31340), (790, 25072), (1264, 15670), (1567, 12640), (1580, 12536), (2528, 7835), (3134, 6320), (3160, 6268)]