21000547690

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{14831}}^1$

素因数の和:15007

約数の個数: 64

約数和(自身を含む): 40174548480

約数和(自身を除く): 19174000790

約数列:

[1, 2, 5, 10, 37, 43, 74, 86, 89, 178, 185, 215, 370, 430, 445, 890, 1591, 3182, 3293, 3827, 6586, 7654, 7955, 14831, 15910, 16465, 19135, 29662, 32930, 38270, 74155, 141599, 148310, 283198, 548747, 637733, 707995, 1097494, 1275466, 1319959, 1415990, 2639918, 2743735, 3188665, 5487470, 6377330, 6599795, 13199590, 23596121, 47192242, 48838483, 56758237, 97676966, 113516474, 117980605, 235961210, 244192415, 283791185, 488384830, 567582370, 2100054769, 4200109538, 10500273845, 21000547690]

約数ペア:

[(1, 21000547690), (2, 10500273845), (5, 4200109538), (10, 2100054769), (37, 567582370), (43, 488384830), (74, 283791185), (86, 244192415), (89, 235961210), (178, 117980605), (185, 113516474), (215, 97676966), (370, 56758237), (430, 48838483), (445, 47192242), (890, 23596121), (1591, 13199590), (3182, 6599795), (3293, 6377330), (3827, 5487470), (6586, 3188665), (7654, 2743735), (7955, 2639918), (14831, 1415990), (15910, 1319959), (16465, 1275466), (19135, 1097494), (29662, 707995), (32930, 637733), (38270, 548747), (74155, 283198), (141599, 148310)]