31865140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 73495800

約数和(自身を除く): 41630660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 148, 149, 170, 185, 289, 298, 340, 370, 578, 596, 629, 740, 745, 1156, 1258, 1445, 1490, 2516, 2533, 2890, 2980, 3145, 5066, 5513, 5780, 6290, 10132, 10693, 11026, 12580, 12665, 21386, 22052, 25330, 27565, 42772, 43061, 50660, 53465, 55130, 86122, 93721, 106930, 110260, 172244, 187442, 213860, 215305, 374884, 430610, 468605, 861220, 937210, 1593257, 1874420, 3186514, 6373028, 7966285, 15932570, 31865140]

約数ペア:

[(1, 31865140), (2, 15932570), (4, 7966285), (5, 6373028), (10, 3186514), (17, 1874420), (20, 1593257), (34, 937210), (37, 861220), (68, 468605), (74, 430610), (85, 374884), (148, 215305), (149, 213860), (170, 187442), (185, 172244), (289, 110260), (298, 106930), (340, 93721), (370, 86122), (578, 55130), (596, 53465), (629, 50660), (740, 43061), (745, 42772), (1156, 27565), (1258, 25330), (1445, 22052), (1490, 21386), (2516, 12665), (2533, 12580), (2890, 11026), (2980, 10693), (3145, 10132), (5066, 6290), (5513, 5780)]