400018250

素因数分解:

$2^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{293}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 774918144

約数和(自身を除く): 374899894

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 125, 127, 215, 250, 254, 293, 430, 586, 635, 1075, 1270, 1465, 2150, 2930, 3175, 5375, 5461, 6350, 7325, 10750, 10922, 12599, 14650, 15875, 25198, 27305, 31750, 36625, 37211, 54610, 62995, 73250, 74422, 125990, 136525, 186055, 273050, 314975, 372110, 629950, 682625, 930275, 1365250, 1574875, 1600073, 1860550, 3149750, 3200146, 4651375, 8000365, 9302750, 16000730, 40001825, 80003650, 200009125, 400018250]

約数ペア:

[(1, 400018250), (2, 200009125), (5, 80003650), (10, 40001825), (25, 16000730), (43, 9302750), (50, 8000365), (86, 4651375), (125, 3200146), (127, 3149750), (215, 1860550), (250, 1600073), (254, 1574875), (293, 1365250), (430, 930275), (586, 682625), (635, 629950), (1075, 372110), (1270, 314975), (1465, 273050), (2150, 186055), (2930, 136525), (3175, 125990), (5375, 74422), (5461, 73250), (6350, 62995), (7325, 54610), (10750, 37211), (10922, 36625), (12599, 31750), (14650, 27305), (15875, 25198)]