19987260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 58662912

約数和(自身を除く): 38675652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 61, 86, 122, 127, 129, 172, 183, 215, 244, 254, 258, 305, 366, 381, 430, 508, 516, 610, 635, 645, 732, 762, 860, 915, 1220, 1270, 1290, 1524, 1830, 1905, 2540, 2580, 2623, 3660, 3810, 5246, 5461, 7620, 7747, 7869, 10492, 10922, 13115, 15494, 15738, 16383, 21844, 23241, 26230, 27305, 30988, 31476, 32766, 38735, 39345, 46482, 52460, 54610, 65532, 77470, 78690, 81915, 92964, 109220, 116205, 154940, 157380, 163830, 232410, 327660, 333121, 464820, 666242, 999363, 1332484, 1665605, 1998726, 3331210, 3997452, 4996815, 6662420, 9993630, 19987260]

約数ペア:

[(1, 19987260), (2, 9993630), (3, 6662420), (4, 4996815), (5, 3997452), (6, 3331210), (10, 1998726), (12, 1665605), (15, 1332484), (20, 999363), (30, 666242), (43, 464820), (60, 333121), (61, 327660), (86, 232410), (122, 163830), (127, 157380), (129, 154940), (172, 116205), (183, 109220), (215, 92964), (244, 81915), (254, 78690), (258, 77470), (305, 65532), (366, 54610), (381, 52460), (430, 46482), (508, 39345), (516, 38735), (610, 32766), (635, 31476), (645, 30988), (732, 27305), (762, 26230), (860, 23241), (915, 21844), (1220, 16383), (1270, 15738), (1290, 15494), (1524, 13115), (1830, 10922), (1905, 10492), (2540, 7869), (2580, 7747), (2623, 7620), (3660, 5461), (3810, 5246)]