20006400

素因数分解:

$2^9\times 3^1\times 5^2\times {\mathrm{521}}^1$

素因数の和:552

約数の個数: 120

約数和(自身を含む): 66216744

約数和(自身を除く): 46210344

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 128, 150, 160, 192, 200, 240, 256, 300, 320, 384, 400, 480, 512, 521, 600, 640, 768, 800, 960, 1042, 1200, 1280, 1536, 1563, 1600, 1920, 2084, 2400, 2560, 2605, 3126, 3200, 3840, 4168, 4800, 5210, 6252, 6400, 7680, 7815, 8336, 9600, 10420, 12504, 12800, 13025, 15630, 16672, 19200, 20840, 25008, 26050, 31260, 33344, 38400, 39075, 41680, 50016, 52100, 62520, 66688, 78150, 83360, 100032, 104200, 125040, 133376, 156300, 166720, 200064, 208400, 250080, 266752, 312600, 333440, 400128, 416800, 500160, 625200, 666880, 800256, 833600, 1000320, 1250400, 1333760, 1667200, 2000640, 2500800, 3334400, 4001280, 5001600, 6668800, 10003200, 20006400]

約数ペア:

[(1, 20006400), (2, 10003200), (3, 6668800), (4, 5001600), (5, 4001280), (6, 3334400), (8, 2500800), (10, 2000640), (12, 1667200), (15, 1333760), (16, 1250400), (20, 1000320), (24, 833600), (25, 800256), (30, 666880), (32, 625200), (40, 500160), (48, 416800), (50, 400128), (60, 333440), (64, 312600), (75, 266752), (80, 250080), (96, 208400), (100, 200064), (120, 166720), (128, 156300), (150, 133376), (160, 125040), (192, 104200), (200, 100032), (240, 83360), (256, 78150), (300, 66688), (320, 62520), (384, 52100), (400, 50016), (480, 41680), (512, 39075), (521, 38400), (600, 33344), (640, 31260), (768, 26050), (800, 25008), (960, 20840), (1042, 19200), (1200, 16672), (1280, 15630), (1536, 13025), (1563, 12800), (1600, 12504), (1920, 10420), (2084, 9600), (2400, 8336), (2560, 7815), (2605, 7680), (3126, 6400), (3200, 6252), (3840, 5210), (4168, 4800)]