28947880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 70761600

約数和(自身を除く): 41813720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 179, 260, 311, 358, 520, 622, 716, 895, 1244, 1432, 1555, 1790, 2327, 2488, 3110, 3580, 4043, 4654, 6220, 7160, 8086, 9308, 11635, 12440, 16172, 18616, 20215, 23270, 32344, 40430, 46540, 55669, 80860, 93080, 111338, 161720, 222676, 278345, 445352, 556690, 723697, 1113380, 1447394, 2226760, 2894788, 3618485, 5789576, 7236970, 14473940, 28947880]

約数ペア:

[(1, 28947880), (2, 14473940), (4, 7236970), (5, 5789576), (8, 3618485), (10, 2894788), (13, 2226760), (20, 1447394), (26, 1113380), (40, 723697), (52, 556690), (65, 445352), (104, 278345), (130, 222676), (179, 161720), (260, 111338), (311, 93080), (358, 80860), (520, 55669), (622, 46540), (716, 40430), (895, 32344), (1244, 23270), (1432, 20215), (1555, 18616), (1790, 16172), (2327, 12440), (2488, 11635), (3110, 9308), (3580, 8086), (4043, 7160), (4654, 6220)]