7220000

素因数分解:

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

素因数の和:68

約数の個数: 90

約数和(自身を含む): 18746343

約数和(自身を除く): 11526343

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 125, 152, 160, 190, 200, 250, 304, 361, 380, 400, 475, 500, 608, 625, 722, 760, 800, 950, 1000, 1250, 1444, 1520, 1805, 1900, 2000, 2375, 2500, 2888, 3040, 3610, 3800, 4000, 4750, 5000, 5776, 7220, 7600, 9025, 9500, 10000, 11552, 11875, 14440, 15200, 18050, 19000, 20000, 23750, 28880, 36100, 38000, 45125, 47500, 57760, 72200, 76000, 90250, 95000, 144400, 180500, 190000, 225625, 288800, 361000, 380000, 451250, 722000, 902500, 1444000, 1805000, 3610000, 7220000]

約数ペア:

[(1, 7220000), (2, 3610000), (4, 1805000), (5, 1444000), (8, 902500), (10, 722000), (16, 451250), (19, 380000), (20, 361000), (25, 288800), (32, 225625), (38, 190000), (40, 180500), (50, 144400), (76, 95000), (80, 90250), (95, 76000), (100, 72200), (125, 57760), (152, 47500), (160, 45125), (190, 38000), (200, 36100), (250, 28880), (304, 23750), (361, 20000), (380, 19000), (400, 18050), (475, 15200), (500, 14440), (608, 11875), (625, 11552), (722, 10000), (760, 9500), (800, 9025), (950, 7600), (1000, 7220), (1250, 5776), (1444, 5000), (1520, 4750), (1805, 4000), (1900, 3800), (2000, 3610), (2375, 3040), (2500, 2888)]