20005129600

素因数分解:

$2^7\times 5^2\times {\mathrm{569}}^1\times {\mathrm{10987}}^1$

素因数の和:11580

約数の個数: 96

約数和(自身を含む): 49510279800

約数和(自身を除く): 29505150200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 569, 640, 800, 1138, 1600, 2276, 2845, 3200, 4552, 5690, 9104, 10987, 11380, 14225, 18208, 21974, 22760, 28450, 36416, 43948, 45520, 54935, 56900, 72832, 87896, 91040, 109870, 113800, 175792, 182080, 219740, 227600, 274675, 351584, 364160, 439480, 455200, 549350, 703168, 878960, 910400, 1098700, 1406336, 1757920, 1820800, 2197400, 3515840, 4394800, 6251603, 7031680, 8789600, 12503206, 17579200, 25006412, 31258015, 35158400, 50012824, 62516030, 100025648, 125032060, 156290075, 200051296, 250064120, 312580150, 400102592, 500128240, 625160300, 800205184, 1000256480, 1250320600, 2000512960, 2500641200, 4001025920, 5001282400, 10002564800, 20005129600]

約数ペア:

[(1, 20005129600), (2, 10002564800), (4, 5001282400), (5, 4001025920), (8, 2500641200), (10, 2000512960), (16, 1250320600), (20, 1000256480), (25, 800205184), (32, 625160300), (40, 500128240), (50, 400102592), (64, 312580150), (80, 250064120), (100, 200051296), (128, 156290075), (160, 125032060), (200, 100025648), (320, 62516030), (400, 50012824), (569, 35158400), (640, 31258015), (800, 25006412), (1138, 17579200), (1600, 12503206), (2276, 8789600), (2845, 7031680), (3200, 6251603), (4552, 4394800), (5690, 3515840), (9104, 2197400), (10987, 1820800), (11380, 1757920), (14225, 1406336), (18208, 1098700), (21974, 910400), (22760, 878960), (28450, 703168), (36416, 549350), (43948, 455200), (45520, 439480), (54935, 364160), (56900, 351584), (72832, 274675), (87896, 227600), (91040, 219740), (109870, 182080), (113800, 175792)]