21006480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 160

約数和(自身を含む): 72673920

約数和(自身を除く): 51667440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 73, 80, 88, 109, 110, 120, 132, 146, 165, 176, 218, 219, 220, 240, 264, 292, 327, 330, 365, 436, 438, 440, 528, 545, 584, 654, 660, 730, 803, 872, 876, 880, 1090, 1095, 1168, 1199, 1308, 1320, 1460, 1606, 1635, 1744, 1752, 2180, 2190, 2398, 2409, 2616, 2640, 2920, 3212, 3270, 3504, 3597, 4015, 4360, 4380, 4796, 4818, 5232, 5840, 5995, 6424, 6540, 7194, 7957, 8030, 8720, 8760, 9592, 9636, 11990, 12045, 12848, 13080, 14388, 15914, 16060, 17520, 17985, 19184, 19272, 23871, 23980, 24090, 26160, 28776, 31828, 32120, 35970, 38544, 39785, 47742, 47960, 48180, 57552, 63656, 64240, 71940, 79570, 87527, 95484, 95920, 96360, 119355, 127312, 143880, 159140, 175054, 190968, 192720, 238710, 262581, 287760, 318280, 350108, 381936, 437635, 477420, 525162, 636560, 700216, 875270, 954840, 1050324, 1312905, 1400432, 1750540, 1909680, 2100648, 2625810, 3501080, 4201296, 5251620, 7002160, 10503240, 21006480]

約数ペア:

[(1, 21006480), (2, 10503240), (3, 7002160), (4, 5251620), (5, 4201296), (6, 3501080), (8, 2625810), (10, 2100648), (11, 1909680), (12, 1750540), (15, 1400432), (16, 1312905), (20, 1050324), (22, 954840), (24, 875270), (30, 700216), (33, 636560), (40, 525162), (44, 477420), (48, 437635), (55, 381936), (60, 350108), (66, 318280), (73, 287760), (80, 262581), (88, 238710), (109, 192720), (110, 190968), (120, 175054), (132, 159140), (146, 143880), (165, 127312), (176, 119355), (218, 96360), (219, 95920), (220, 95484), (240, 87527), (264, 79570), (292, 71940), (327, 64240), (330, 63656), (365, 57552), (436, 48180), (438, 47960), (440, 47742), (528, 39785), (545, 38544), (584, 35970), (654, 32120), (660, 31828), (730, 28776), (803, 26160), (872, 24090), (876, 23980), (880, 23871), (1090, 19272), (1095, 19184), (1168, 17985), (1199, 17520), (1308, 16060), (1320, 15914), (1460, 14388), (1606, 13080), (1635, 12848), (1744, 12045), (1752, 11990), (2180, 9636), (2190, 9592), (2398, 8760), (2409, 8720), (2616, 8030), (2640, 7957), (2920, 7194), (3212, 6540), (3270, 6424), (3504, 5995), (3597, 5840), (4015, 5232), (4360, 4818), (4380, 4796)]