19589486540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{691231}}^1$

素因数の和:691362

約数の個数: 48

約数和(自身を含む): 44708885760

約数和(自身を除く): 25119399220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2834, 5668, 7085, 14170, 28340, 691231, 1382462, 2764924, 3456155, 6912310, 8986003, 13824620, 17972006, 35944012, 44930015, 75344179, 89860030, 150688358, 179720060, 301376716, 376720895, 753441790, 979474327, 1506883580, 1958948654, 3917897308, 4897371635, 9794743270, 19589486540]

約数ペア:

[(1, 19589486540), (2, 9794743270), (4, 4897371635), (5, 3917897308), (10, 1958948654), (13, 1506883580), (20, 979474327), (26, 753441790), (52, 376720895), (65, 301376716), (109, 179720060), (130, 150688358), (218, 89860030), (260, 75344179), (436, 44930015), (545, 35944012), (1090, 17972006), (1417, 13824620), (2180, 8986003), (2834, 6912310), (5668, 3456155), (7085, 2764924), (14170, 1382462), (28340, 691231)]