40004000

素因数分解:

$2^5\times 5^3\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 100363536

約数和(自身を除く): 60359536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 73, 80, 100, 125, 137, 146, 160, 200, 250, 274, 292, 365, 400, 500, 548, 584, 685, 730, 800, 1000, 1096, 1168, 1370, 1460, 1825, 2000, 2192, 2336, 2740, 2920, 3425, 3650, 4000, 4384, 5480, 5840, 6850, 7300, 9125, 10001, 10960, 11680, 13700, 14600, 17125, 18250, 20002, 21920, 27400, 29200, 34250, 36500, 40004, 50005, 54800, 58400, 68500, 73000, 80008, 100010, 109600, 137000, 146000, 160016, 200020, 250025, 274000, 292000, 320032, 400040, 500050, 548000, 800080, 1000100, 1250125, 1600160, 2000200, 2500250, 4000400, 5000500, 8000800, 10001000, 20002000, 40004000]

約数ペア:

[(1, 40004000), (2, 20002000), (4, 10001000), (5, 8000800), (8, 5000500), (10, 4000400), (16, 2500250), (20, 2000200), (25, 1600160), (32, 1250125), (40, 1000100), (50, 800080), (73, 548000), (80, 500050), (100, 400040), (125, 320032), (137, 292000), (146, 274000), (160, 250025), (200, 200020), (250, 160016), (274, 146000), (292, 137000), (365, 109600), (400, 100010), (500, 80008), (548, 73000), (584, 68500), (685, 58400), (730, 54800), (800, 50005), (1000, 40004), (1096, 36500), (1168, 34250), (1370, 29200), (1460, 27400), (1825, 21920), (2000, 20002), (2192, 18250), (2336, 17125), (2740, 14600), (2920, 13700), (3425, 11680), (3650, 10960), (4000, 10001), (4384, 9125), (5480, 7300), (5840, 6850)]