388616500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^2\times {\mathrm{2153}}^1$

素因数の和:2210

約数の個数: 72

約数和(自身を含む): 896176008

約数和(自身を除く): 507559508

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 361, 380, 475, 500, 722, 950, 1444, 1805, 1900, 2153, 2375, 3610, 4306, 4750, 7220, 8612, 9025, 9500, 10765, 18050, 21530, 36100, 40907, 43060, 45125, 53825, 81814, 90250, 107650, 163628, 180500, 204535, 215300, 269125, 409070, 538250, 777233, 818140, 1022675, 1076500, 1554466, 2045350, 3108932, 3886165, 4090700, 5113375, 7772330, 10226750, 15544660, 19430825, 20453500, 38861650, 77723300, 97154125, 194308250, 388616500]

約数ペア:

[(1, 388616500), (2, 194308250), (4, 97154125), (5, 77723300), (10, 38861650), (19, 20453500), (20, 19430825), (25, 15544660), (38, 10226750), (50, 7772330), (76, 5113375), (95, 4090700), (100, 3886165), (125, 3108932), (190, 2045350), (250, 1554466), (361, 1076500), (380, 1022675), (475, 818140), (500, 777233), (722, 538250), (950, 409070), (1444, 269125), (1805, 215300), (1900, 204535), (2153, 180500), (2375, 163628), (3610, 107650), (4306, 90250), (4750, 81814), (7220, 53825), (8612, 45125), (9025, 43060), (9500, 40907), (10765, 36100), (18050, 21530)]