189797500

素因数分解:

$2^2\times 5^4\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 90

約数和(自身を含む): 434298480

約数和(自身を除く): 244500980

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 79, 100, 124, 125, 155, 158, 250, 310, 316, 395, 500, 620, 625, 775, 790, 961, 1250, 1550, 1580, 1922, 1975, 2449, 2500, 3100, 3844, 3875, 3950, 4805, 4898, 7750, 7900, 9610, 9796, 9875, 12245, 15500, 19220, 19375, 19750, 24025, 24490, 38750, 39500, 48050, 48980, 49375, 61225, 75919, 77500, 96100, 98750, 120125, 122450, 151838, 197500, 240250, 244900, 303676, 306125, 379595, 480500, 600625, 612250, 759190, 1201250, 1224500, 1518380, 1530625, 1897975, 2402500, 3061250, 3795950, 6122500, 7591900, 9489875, 18979750, 37959500, 47449375, 94898750, 189797500]

約数ペア:

[(1, 189797500), (2, 94898750), (4, 47449375), (5, 37959500), (10, 18979750), (20, 9489875), (25, 7591900), (31, 6122500), (50, 3795950), (62, 3061250), (79, 2402500), (100, 1897975), (124, 1530625), (125, 1518380), (155, 1224500), (158, 1201250), (250, 759190), (310, 612250), (316, 600625), (395, 480500), (500, 379595), (620, 306125), (625, 303676), (775, 244900), (790, 240250), (961, 197500), (1250, 151838), (1550, 122450), (1580, 120125), (1922, 98750), (1975, 96100), (2449, 77500), (2500, 75919), (3100, 61225), (3844, 49375), (3875, 48980), (3950, 48050), (4805, 39500), (4898, 38750), (7750, 24490), (7900, 24025), (9610, 19750), (9796, 19375), (9875, 19220), (12245, 15500)]