654456400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{991}}^1$

素因数の和:1149

約数の個数: 120

約数和(自身を含む): 1708335104

約数和(自身を除く): 1053878704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 127, 130, 200, 208, 254, 260, 325, 400, 508, 520, 635, 650, 991, 1016, 1040, 1270, 1300, 1651, 1982, 2032, 2540, 2600, 3175, 3302, 3964, 4955, 5080, 5200, 6350, 6604, 7928, 8255, 9910, 10160, 12700, 12883, 13208, 15856, 16510, 19820, 24775, 25400, 25766, 26416, 33020, 39640, 41275, 49550, 50800, 51532, 64415, 66040, 79280, 82550, 99100, 103064, 125857, 128830, 132080, 165100, 198200, 206128, 251714, 257660, 322075, 330200, 396400, 503428, 515320, 629285, 644150, 660400, 1006856, 1030640, 1258570, 1288300, 1636141, 2013712, 2517140, 2576600, 3146425, 3272282, 5034280, 5153200, 6292850, 6544564, 8180705, 10068560, 12585700, 13089128, 16361410, 25171400, 26178256, 32722820, 40903525, 50342800, 65445640, 81807050, 130891280, 163614100, 327228200, 654456400]

約数ペア:

[(1, 654456400), (2, 327228200), (4, 163614100), (5, 130891280), (8, 81807050), (10, 65445640), (13, 50342800), (16, 40903525), (20, 32722820), (25, 26178256), (26, 25171400), (40, 16361410), (50, 13089128), (52, 12585700), (65, 10068560), (80, 8180705), (100, 6544564), (104, 6292850), (127, 5153200), (130, 5034280), (200, 3272282), (208, 3146425), (254, 2576600), (260, 2517140), (325, 2013712), (400, 1636141), (508, 1288300), (520, 1258570), (635, 1030640), (650, 1006856), (991, 660400), (1016, 644150), (1040, 629285), (1270, 515320), (1300, 503428), (1651, 396400), (1982, 330200), (2032, 322075), (2540, 257660), (2600, 251714), (3175, 206128), (3302, 198200), (3964, 165100), (4955, 132080), (5080, 128830), (5200, 125857), (6350, 103064), (6604, 99100), (7928, 82550), (8255, 79280), (9910, 66040), (10160, 64415), (12700, 51532), (12883, 50800), (13208, 49550), (15856, 41275), (16510, 39640), (19820, 33020), (24775, 26416), (25400, 25766)]