20807520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{647}}^1$

素因数の和:732

約数の個数: 96

約数和(自身を含む): 66624768

約数和(自身を除く): 45817248

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 67, 80, 96, 120, 134, 160, 201, 240, 268, 335, 402, 480, 536, 647, 670, 804, 1005, 1072, 1294, 1340, 1608, 1941, 2010, 2144, 2588, 2680, 3216, 3235, 3882, 4020, 5176, 5360, 6432, 6470, 7764, 8040, 9705, 10352, 10720, 12940, 15528, 16080, 19410, 20704, 25880, 31056, 32160, 38820, 43349, 51760, 62112, 77640, 86698, 103520, 130047, 155280, 173396, 216745, 260094, 310560, 346792, 433490, 520188, 650235, 693584, 866980, 1040376, 1300470, 1387168, 1733960, 2080752, 2600940, 3467920, 4161504, 5201880, 6935840, 10403760, 20807520]

約数ペア:

[(1, 20807520), (2, 10403760), (3, 6935840), (4, 5201880), (5, 4161504), (6, 3467920), (8, 2600940), (10, 2080752), (12, 1733960), (15, 1387168), (16, 1300470), (20, 1040376), (24, 866980), (30, 693584), (32, 650235), (40, 520188), (48, 433490), (60, 346792), (67, 310560), (80, 260094), (96, 216745), (120, 173396), (134, 155280), (160, 130047), (201, 103520), (240, 86698), (268, 77640), (335, 62112), (402, 51760), (480, 43349), (536, 38820), (647, 32160), (670, 31056), (804, 25880), (1005, 20704), (1072, 19410), (1294, 16080), (1340, 15528), (1608, 12940), (1941, 10720), (2010, 10352), (2144, 9705), (2588, 8040), (2680, 7764), (3216, 6470), (3235, 6432), (3882, 5360), (4020, 5176)]