20788620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 62596800

約数和(自身を除く): 41808180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 89, 102, 170, 178, 204, 229, 255, 267, 340, 356, 445, 458, 510, 534, 687, 890, 916, 1020, 1068, 1145, 1335, 1374, 1513, 1780, 2290, 2670, 2748, 3026, 3435, 3893, 4539, 4580, 5340, 6052, 6870, 7565, 7786, 9078, 11679, 13740, 15130, 15572, 18156, 19465, 20381, 22695, 23358, 30260, 38930, 40762, 45390, 46716, 58395, 61143, 77860, 81524, 90780, 101905, 116790, 122286, 203810, 233580, 244572, 305715, 346477, 407620, 611430, 692954, 1039431, 1222860, 1385908, 1732385, 2078862, 3464770, 4157724, 5197155, 6929540, 10394310, 20788620]

約数ペア:

[(1, 20788620), (2, 10394310), (3, 6929540), (4, 5197155), (5, 4157724), (6, 3464770), (10, 2078862), (12, 1732385), (15, 1385908), (17, 1222860), (20, 1039431), (30, 692954), (34, 611430), (51, 407620), (60, 346477), (68, 305715), (85, 244572), (89, 233580), (102, 203810), (170, 122286), (178, 116790), (204, 101905), (229, 90780), (255, 81524), (267, 77860), (340, 61143), (356, 58395), (445, 46716), (458, 45390), (510, 40762), (534, 38930), (687, 30260), (890, 23358), (916, 22695), (1020, 20381), (1068, 19465), (1145, 18156), (1335, 15572), (1374, 15130), (1513, 13740), (1780, 11679), (2290, 9078), (2670, 7786), (2748, 7565), (3026, 6870), (3435, 6052), (3893, 5340), (4539, 4580)]