19112720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 49871808

約数和(自身を除く): 30759088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 587, 592, 740, 814, 880, 1174, 1480, 1628, 2035, 2348, 2935, 2960, 3256, 4070, 4696, 5870, 6457, 6512, 8140, 9392, 11740, 12914, 16280, 21719, 23480, 25828, 32285, 32560, 43438, 46960, 51656, 64570, 86876, 103312, 108595, 129140, 173752, 217190, 238909, 258280, 347504, 434380, 477818, 516560, 868760, 955636, 1194545, 1737520, 1911272, 2389090, 3822544, 4778180, 9556360, 19112720]

約数ペア:

[(1, 19112720), (2, 9556360), (4, 4778180), (5, 3822544), (8, 2389090), (10, 1911272), (11, 1737520), (16, 1194545), (20, 955636), (22, 868760), (37, 516560), (40, 477818), (44, 434380), (55, 347504), (74, 258280), (80, 238909), (88, 217190), (110, 173752), (148, 129140), (176, 108595), (185, 103312), (220, 86876), (296, 64570), (370, 51656), (407, 46960), (440, 43438), (587, 32560), (592, 32285), (740, 25828), (814, 23480), (880, 21719), (1174, 16280), (1480, 12914), (1628, 11740), (2035, 9392), (2348, 8140), (2935, 6512), (2960, 6457), (3256, 5870), (4070, 4696)]