821459080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:575

約数の個数: 128

約数和(自身を含む): 2075673600

約数和(自身を除く): 1254214520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 131, 155, 248, 260, 262, 310, 389, 403, 520, 524, 620, 655, 778, 806, 1048, 1240, 1310, 1556, 1612, 1703, 1945, 2015, 2620, 3112, 3224, 3406, 3890, 4030, 4061, 5057, 5240, 6812, 7780, 8060, 8122, 8515, 10114, 12059, 13624, 15560, 16120, 16244, 17030, 20228, 20305, 24118, 25285, 32488, 34060, 40456, 40610, 48236, 50570, 50959, 52793, 60295, 68120, 81220, 96472, 101140, 101918, 105586, 120590, 156767, 162440, 202280, 203836, 211172, 241180, 254795, 263965, 313534, 407672, 422344, 482360, 509590, 527930, 627068, 662467, 783835, 1019180, 1055860, 1254136, 1324934, 1567670, 1579729, 2038360, 2111720, 2649868, 3135340, 3159458, 3312335, 5299736, 6270680, 6318916, 6624670, 7898645, 12637832, 13249340, 15797290, 20536477, 26498680, 31594580, 41072954, 63189160, 82145908, 102682385, 164291816, 205364770, 410729540, 821459080]

約数ペア:

[(1, 821459080), (2, 410729540), (4, 205364770), (5, 164291816), (8, 102682385), (10, 82145908), (13, 63189160), (20, 41072954), (26, 31594580), (31, 26498680), (40, 20536477), (52, 15797290), (62, 13249340), (65, 12637832), (104, 7898645), (124, 6624670), (130, 6318916), (131, 6270680), (155, 5299736), (248, 3312335), (260, 3159458), (262, 3135340), (310, 2649868), (389, 2111720), (403, 2038360), (520, 1579729), (524, 1567670), (620, 1324934), (655, 1254136), (778, 1055860), (806, 1019180), (1048, 783835), (1240, 662467), (1310, 627068), (1556, 527930), (1612, 509590), (1703, 482360), (1945, 422344), (2015, 407672), (2620, 313534), (3112, 263965), (3224, 254795), (3406, 241180), (3890, 211172), (4030, 203836), (4061, 202280), (5057, 162440), (5240, 156767), (6812, 120590), (7780, 105586), (8060, 101918), (8122, 101140), (8515, 96472), (10114, 81220), (12059, 68120), (13624, 60295), (15560, 52793), (16120, 50959), (16244, 50570), (17030, 48236), (20228, 40610), (20305, 40456), (24118, 34060), (25285, 32488)]