254406400

素因数分解:

$2^8\times 5^2\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:466

約数の個数: 108

約数和(自身を含む): 636681472

約数和(自身を除く): 382275072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 256, 313, 320, 400, 508, 626, 635, 640, 800, 1016, 1252, 1270, 1280, 1565, 1600, 2032, 2504, 2540, 3130, 3175, 3200, 4064, 5008, 5080, 6260, 6350, 6400, 7825, 8128, 10016, 10160, 12520, 12700, 15650, 16256, 20032, 20320, 25040, 25400, 31300, 32512, 39751, 40064, 40640, 50080, 50800, 62600, 79502, 80128, 81280, 100160, 101600, 125200, 159004, 162560, 198755, 200320, 203200, 250400, 318008, 397510, 400640, 406400, 500800, 636016, 795020, 812800, 993775, 1001600, 1272032, 1590040, 1987550, 2003200, 2544064, 3180080, 3975100, 5088128, 6360160, 7950200, 10176256, 12720320, 15900400, 25440640, 31800800, 50881280, 63601600, 127203200, 254406400]

約数ペア:

[(1, 254406400), (2, 127203200), (4, 63601600), (5, 50881280), (8, 31800800), (10, 25440640), (16, 15900400), (20, 12720320), (25, 10176256), (32, 7950200), (40, 6360160), (50, 5088128), (64, 3975100), (80, 3180080), (100, 2544064), (127, 2003200), (128, 1987550), (160, 1590040), (200, 1272032), (254, 1001600), (256, 993775), (313, 812800), (320, 795020), (400, 636016), (508, 500800), (626, 406400), (635, 400640), (640, 397510), (800, 318008), (1016, 250400), (1252, 203200), (1270, 200320), (1280, 198755), (1565, 162560), (1600, 159004), (2032, 125200), (2504, 101600), (2540, 100160), (3130, 81280), (3175, 80128), (3200, 79502), (4064, 62600), (5008, 50800), (5080, 50080), (6260, 40640), (6350, 40064), (6400, 39751), (7825, 32512), (8128, 31300), (10016, 25400), (10160, 25040), (12520, 20320), (12700, 20032), (15650, 16256)]