19736540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 23355460

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 149, 179, 185, 298, 358, 370, 596, 716, 740, 745, 895, 1490, 1790, 2980, 3580, 5513, 6623, 11026, 13246, 22052, 26492, 26671, 27565, 33115, 53342, 55130, 66230, 106684, 110260, 132460, 133355, 266710, 533420, 986827, 1973654, 3947308, 4934135, 9868270, 19736540]

約数ペア:

[(1, 19736540), (2, 9868270), (4, 4934135), (5, 3947308), (10, 1973654), (20, 986827), (37, 533420), (74, 266710), (148, 133355), (149, 132460), (179, 110260), (185, 106684), (298, 66230), (358, 55130), (370, 53342), (596, 33115), (716, 27565), (740, 26671), (745, 26492), (895, 22052), (1490, 13246), (1790, 11026), (2980, 6623), (3580, 5513)]