638228864

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:540

約数の個数: 128

約数和(自身を含む): 1579368000

約数和(自身を除く): 941139136

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 157, 182, 208, 224, 314, 349, 364, 416, 448, 628, 698, 728, 832, 896, 1099, 1256, 1396, 1456, 1664, 2041, 2198, 2443, 2512, 2792, 2912, 4082, 4396, 4537, 4886, 5024, 5584, 5824, 8164, 8792, 9074, 9772, 10048, 11168, 11648, 14287, 16328, 17584, 18148, 19544, 20096, 22336, 28574, 31759, 32656, 35168, 36296, 39088, 44672, 54793, 57148, 63518, 65312, 70336, 72592, 78176, 109586, 114296, 127036, 130624, 140672, 145184, 156352, 219172, 228592, 254072, 261248, 290368, 312704, 383551, 438344, 457184, 508144, 580736, 712309, 767102, 876688, 914368, 1016288, 1424618, 1534204, 1753376, 1828736, 2032576, 2849236, 3068408, 3506752, 4065152, 4986163, 5698472, 6136816, 7013504, 9972326, 11396944, 12273632, 19944652, 22793888, 24547264, 39889304, 45587776, 49094528, 79778608, 91175552, 159557216, 319114432, 638228864]

約数ペア:

[(1, 638228864), (2, 319114432), (4, 159557216), (7, 91175552), (8, 79778608), (13, 49094528), (14, 45587776), (16, 39889304), (26, 24547264), (28, 22793888), (32, 19944652), (52, 12273632), (56, 11396944), (64, 9972326), (91, 7013504), (104, 6136816), (112, 5698472), (128, 4986163), (157, 4065152), (182, 3506752), (208, 3068408), (224, 2849236), (314, 2032576), (349, 1828736), (364, 1753376), (416, 1534204), (448, 1424618), (628, 1016288), (698, 914368), (728, 876688), (832, 767102), (896, 712309), (1099, 580736), (1256, 508144), (1396, 457184), (1456, 438344), (1664, 383551), (2041, 312704), (2198, 290368), (2443, 261248), (2512, 254072), (2792, 228592), (2912, 219172), (4082, 156352), (4396, 145184), (4537, 140672), (4886, 130624), (5024, 127036), (5584, 114296), (5824, 109586), (8164, 78176), (8792, 72592), (9074, 70336), (9772, 65312), (10048, 63518), (11168, 57148), (11648, 54793), (14287, 44672), (16328, 39088), (17584, 36296), (18148, 35168), (19544, 32656), (20096, 31759), (22336, 28574)]