21349280

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:246

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 33518176

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 47, 68, 80, 85, 94, 136, 160, 167, 170, 188, 235, 272, 334, 340, 376, 470, 544, 668, 680, 752, 799, 835, 940, 1336, 1360, 1504, 1598, 1670, 1880, 2672, 2720, 2839, 3196, 3340, 3760, 3995, 5344, 5678, 6392, 6680, 7520, 7849, 7990, 11356, 12784, 13360, 14195, 15698, 15980, 22712, 25568, 26720, 28390, 31396, 31960, 39245, 45424, 56780, 62792, 63920, 78490, 90848, 113560, 125584, 127840, 133433, 156980, 227120, 251168, 266866, 313960, 454240, 533732, 627920, 667165, 1067464, 1255840, 1334330, 2134928, 2668660, 4269856, 5337320, 10674640, 21349280]

約数ペア:

[(1, 21349280), (2, 10674640), (4, 5337320), (5, 4269856), (8, 2668660), (10, 2134928), (16, 1334330), (17, 1255840), (20, 1067464), (32, 667165), (34, 627920), (40, 533732), (47, 454240), (68, 313960), (80, 266866), (85, 251168), (94, 227120), (136, 156980), (160, 133433), (167, 127840), (170, 125584), (188, 113560), (235, 90848), (272, 78490), (334, 63920), (340, 62792), (376, 56780), (470, 45424), (544, 39245), (668, 31960), (680, 31396), (752, 28390), (799, 26720), (835, 25568), (940, 22712), (1336, 15980), (1360, 15698), (1504, 14195), (1598, 13360), (1670, 12784), (1880, 11356), (2672, 7990), (2720, 7849), (2839, 7520), (3196, 6680), (3340, 6392), (3760, 5678), (3995, 5344)]