399289280

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1811}}^1$

素因数の和:1894

約数の個数: 112

約数和(自身を含む): 1043842464

約数和(自身を除く): 644553184

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 64, 65, 80, 104, 106, 130, 160, 208, 212, 260, 265, 320, 416, 424, 520, 530, 689, 832, 848, 1040, 1060, 1378, 1696, 1811, 2080, 2120, 2756, 3392, 3445, 3622, 4160, 4240, 5512, 6890, 7244, 8480, 9055, 11024, 13780, 14488, 16960, 18110, 22048, 23543, 27560, 28976, 36220, 44096, 47086, 55120, 57952, 72440, 94172, 95983, 110240, 115904, 117715, 144880, 188344, 191966, 220480, 235430, 289760, 376688, 383932, 470860, 479915, 579520, 753376, 767864, 941720, 959830, 1247779, 1506752, 1535728, 1883440, 1919660, 2495558, 3071456, 3766880, 3839320, 4991116, 6142912, 6238895, 7533760, 7678640, 9982232, 12477790, 15357280, 19964464, 24955580, 30714560, 39928928, 49911160, 79857856, 99822320, 199644640, 399289280]

約数ペア:

[(1, 399289280), (2, 199644640), (4, 99822320), (5, 79857856), (8, 49911160), (10, 39928928), (13, 30714560), (16, 24955580), (20, 19964464), (26, 15357280), (32, 12477790), (40, 9982232), (52, 7678640), (53, 7533760), (64, 6238895), (65, 6142912), (80, 4991116), (104, 3839320), (106, 3766880), (130, 3071456), (160, 2495558), (208, 1919660), (212, 1883440), (260, 1535728), (265, 1506752), (320, 1247779), (416, 959830), (424, 941720), (520, 767864), (530, 753376), (689, 579520), (832, 479915), (848, 470860), (1040, 383932), (1060, 376688), (1378, 289760), (1696, 235430), (1811, 220480), (2080, 191966), (2120, 188344), (2756, 144880), (3392, 117715), (3445, 115904), (3622, 110240), (4160, 95983), (4240, 94172), (5512, 72440), (6890, 57952), (7244, 55120), (8480, 47086), (9055, 44096), (11024, 36220), (13780, 28976), (14488, 27560), (16960, 23543), (18110, 22048)]