420186400

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{16943}}^1$

素因数の和:16994

約数の個数: 72

約数和(自身を含む): 1058932224

約数和(自身を除く): 638745824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 992, 1240, 1550, 2480, 3100, 4960, 6200, 12400, 16943, 24800, 33886, 67772, 84715, 135544, 169430, 271088, 338860, 423575, 525233, 542176, 677720, 847150, 1050466, 1355440, 1694300, 2100932, 2626165, 2710880, 3388600, 4201864, 5252330, 6777200, 8403728, 10504660, 13130825, 13554400, 16807456, 21009320, 26261650, 42018640, 52523300, 84037280, 105046600, 210093200, 420186400]

約数ペア:

[(1, 420186400), (2, 210093200), (4, 105046600), (5, 84037280), (8, 52523300), (10, 42018640), (16, 26261650), (20, 21009320), (25, 16807456), (31, 13554400), (32, 13130825), (40, 10504660), (50, 8403728), (62, 6777200), (80, 5252330), (100, 4201864), (124, 3388600), (155, 2710880), (160, 2626165), (200, 2100932), (248, 1694300), (310, 1355440), (400, 1050466), (496, 847150), (620, 677720), (775, 542176), (800, 525233), (992, 423575), (1240, 338860), (1550, 271088), (2480, 169430), (3100, 135544), (4960, 84715), (6200, 67772), (12400, 33886), (16943, 24800)]