64940800

素因数分解:

$2^8\times 5^2\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 108

約数和(自身を含む): 164112760

約数和(自身を除く): 99171960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 73, 80, 100, 128, 139, 146, 160, 200, 256, 278, 292, 320, 365, 400, 556, 584, 640, 695, 730, 800, 1112, 1168, 1280, 1390, 1460, 1600, 1825, 2224, 2336, 2780, 2920, 3200, 3475, 3650, 4448, 4672, 5560, 5840, 6400, 6950, 7300, 8896, 9344, 10147, 11120, 11680, 13900, 14600, 17792, 18688, 20294, 22240, 23360, 27800, 29200, 35584, 40588, 44480, 46720, 50735, 55600, 58400, 81176, 88960, 93440, 101470, 111200, 116800, 162352, 177920, 202940, 222400, 233600, 253675, 324704, 405880, 444800, 467200, 507350, 649408, 811760, 889600, 1014700, 1298816, 1623520, 2029400, 2597632, 3247040, 4058800, 6494080, 8117600, 12988160, 16235200, 32470400, 64940800]

約数ペア:

[(1, 64940800), (2, 32470400), (4, 16235200), (5, 12988160), (8, 8117600), (10, 6494080), (16, 4058800), (20, 3247040), (25, 2597632), (32, 2029400), (40, 1623520), (50, 1298816), (64, 1014700), (73, 889600), (80, 811760), (100, 649408), (128, 507350), (139, 467200), (146, 444800), (160, 405880), (200, 324704), (256, 253675), (278, 233600), (292, 222400), (320, 202940), (365, 177920), (400, 162352), (556, 116800), (584, 111200), (640, 101470), (695, 93440), (730, 88960), (800, 81176), (1112, 58400), (1168, 55600), (1280, 50735), (1390, 46720), (1460, 44480), (1600, 40588), (1825, 35584), (2224, 29200), (2336, 27800), (2780, 23360), (2920, 22240), (3200, 20294), (3475, 18688), (3650, 17792), (4448, 14600), (4672, 13900), (5560, 11680), (5840, 11120), (6400, 10147), (6950, 9344), (7300, 8896)]