20297420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 51480576

約数和(自身を除く): 31183156

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 47, 52, 55, 65, 94, 110, 130, 143, 151, 188, 220, 235, 260, 286, 302, 470, 517, 572, 604, 611, 715, 755, 940, 1034, 1222, 1430, 1510, 1661, 1963, 2068, 2444, 2585, 2860, 3020, 3055, 3322, 3926, 5170, 6110, 6644, 6721, 7097, 7852, 8305, 9815, 10340, 12220, 13442, 14194, 16610, 19630, 21593, 26884, 28388, 33220, 33605, 35485, 39260, 43186, 67210, 70970, 78067, 86372, 92261, 107965, 134420, 141940, 156134, 184522, 215930, 312268, 369044, 390335, 431860, 461305, 780670, 922610, 1014871, 1561340, 1845220, 2029742, 4059484, 5074355, 10148710, 20297420]

約数ペア:

[(1, 20297420), (2, 10148710), (4, 5074355), (5, 4059484), (10, 2029742), (11, 1845220), (13, 1561340), (20, 1014871), (22, 922610), (26, 780670), (44, 461305), (47, 431860), (52, 390335), (55, 369044), (65, 312268), (94, 215930), (110, 184522), (130, 156134), (143, 141940), (151, 134420), (188, 107965), (220, 92261), (235, 86372), (260, 78067), (286, 70970), (302, 67210), (470, 43186), (517, 39260), (572, 35485), (604, 33605), (611, 33220), (715, 28388), (755, 26884), (940, 21593), (1034, 19630), (1222, 16610), (1430, 14194), (1510, 13442), (1661, 12220), (1963, 10340), (2068, 9815), (2444, 8305), (2585, 7852), (2860, 7097), (3020, 6721), (3055, 6644), (3322, 6110), (3926, 5170)]