21707160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4889}}^1$

素因数の和:4940

約数の個数: 64

約数和(自身を含む): 66895200

約数和(自身を除く): 45188040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4889, 9778, 14667, 19556, 24445, 29334, 39112, 48890, 58668, 73335, 97780, 117336, 146670, 180893, 195560, 293340, 361786, 542679, 586680, 723572, 904465, 1085358, 1447144, 1808930, 2170716, 2713395, 3617860, 4341432, 5426790, 7235720, 10853580, 21707160]

約数ペア:

[(1, 21707160), (2, 10853580), (3, 7235720), (4, 5426790), (5, 4341432), (6, 3617860), (8, 2713395), (10, 2170716), (12, 1808930), (15, 1447144), (20, 1085358), (24, 904465), (30, 723572), (37, 586680), (40, 542679), (60, 361786), (74, 293340), (111, 195560), (120, 180893), (148, 146670), (185, 117336), (222, 97780), (296, 73335), (370, 58668), (444, 48890), (555, 39112), (740, 29334), (888, 24445), (1110, 19556), (1480, 14667), (2220, 9778), (4440, 4889)]