28880000

素因数分解:

$2^7\times 5^4\times {\mathrm{19}}^2$

素因数の和:72

約数の個数: 120

約数和(自身を含む): 75878055

約数和(自身を除く): 46998055

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 125, 128, 152, 160, 190, 200, 250, 304, 320, 361, 380, 400, 475, 500, 608, 625, 640, 722, 760, 800, 950, 1000, 1216, 1250, 1444, 1520, 1600, 1805, 1900, 2000, 2375, 2432, 2500, 2888, 3040, 3200, 3610, 3800, 4000, 4750, 5000, 5776, 6080, 7220, 7600, 8000, 9025, 9500, 10000, 11552, 11875, 12160, 14440, 15200, 16000, 18050, 19000, 20000, 23104, 23750, 28880, 30400, 36100, 38000, 40000, 45125, 46208, 47500, 57760, 60800, 72200, 76000, 80000, 90250, 95000, 115520, 144400, 152000, 180500, 190000, 225625, 231040, 288800, 304000, 361000, 380000, 451250, 577600, 722000, 760000, 902500, 1155200, 1444000, 1520000, 1805000, 2888000, 3610000, 5776000, 7220000, 14440000, 28880000]

約数ペア:

[(1, 28880000), (2, 14440000), (4, 7220000), (5, 5776000), (8, 3610000), (10, 2888000), (16, 1805000), (19, 1520000), (20, 1444000), (25, 1155200), (32, 902500), (38, 760000), (40, 722000), (50, 577600), (64, 451250), (76, 380000), (80, 361000), (95, 304000), (100, 288800), (125, 231040), (128, 225625), (152, 190000), (160, 180500), (190, 152000), (200, 144400), (250, 115520), (304, 95000), (320, 90250), (361, 80000), (380, 76000), (400, 72200), (475, 60800), (500, 57760), (608, 47500), (625, 46208), (640, 45125), (722, 40000), (760, 38000), (800, 36100), (950, 30400), (1000, 28880), (1216, 23750), (1250, 23104), (1444, 20000), (1520, 19000), (1600, 18050), (1805, 16000), (1900, 15200), (2000, 14440), (2375, 12160), (2432, 11875), (2500, 11552), (2888, 10000), (3040, 9500), (3200, 9025), (3610, 8000), (3800, 7600), (4000, 7220), (4750, 6080), (5000, 5776)]