21903990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1481}}^1$

素因数の和:1537

約数の個数: 64

約数和(自身を含む): 57620160

約数和(自身を除く): 35716170

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 29, 30, 34, 51, 58, 85, 87, 102, 145, 170, 174, 255, 290, 435, 493, 510, 870, 986, 1479, 1481, 2465, 2958, 2962, 4443, 4930, 7395, 7405, 8886, 14790, 14810, 22215, 25177, 42949, 44430, 50354, 75531, 85898, 125885, 128847, 151062, 214745, 251770, 257694, 377655, 429490, 644235, 730133, 755310, 1288470, 1460266, 2190399, 3650665, 4380798, 7301330, 10951995, 21903990]

約数ペア:

[(1, 21903990), (2, 10951995), (3, 7301330), (5, 4380798), (6, 3650665), (10, 2190399), (15, 1460266), (17, 1288470), (29, 755310), (30, 730133), (34, 644235), (51, 429490), (58, 377655), (85, 257694), (87, 251770), (102, 214745), (145, 151062), (170, 128847), (174, 125885), (255, 85898), (290, 75531), (435, 50354), (493, 44430), (510, 42949), (870, 25177), (986, 22215), (1479, 14810), (1481, 14790), (2465, 8886), (2958, 7405), (2962, 7395), (4443, 4930)]