20737500

素因数分解:

$2^2\times 3^1\times 5^5\times 7^1\times {\mathrm{79}}^1$

素因数の和:118

約数の個数: 144

約数和(自身を含む): 69995520

約数和(自身を除く): 49258020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 79, 84, 100, 105, 125, 140, 150, 158, 175, 210, 237, 250, 300, 316, 350, 375, 395, 420, 474, 500, 525, 553, 625, 700, 750, 790, 875, 948, 1050, 1106, 1185, 1250, 1500, 1580, 1659, 1750, 1875, 1975, 2100, 2212, 2370, 2500, 2625, 2765, 3125, 3318, 3500, 3750, 3950, 4375, 4740, 5250, 5530, 5925, 6250, 6636, 7500, 7900, 8295, 8750, 9375, 9875, 10500, 11060, 11850, 12500, 13125, 13825, 16590, 17500, 18750, 19750, 21875, 23700, 26250, 27650, 29625, 33180, 37500, 39500, 41475, 43750, 49375, 52500, 55300, 59250, 65625, 69125, 82950, 87500, 98750, 118500, 131250, 138250, 148125, 165900, 197500, 207375, 246875, 262500, 276500, 296250, 345625, 414750, 493750, 592500, 691250, 740625, 829500, 987500, 1036875, 1382500, 1481250, 1728125, 2073750, 2962500, 3456250, 4147500, 5184375, 6912500, 10368750, 20737500]

約数ペア:

[(1, 20737500), (2, 10368750), (3, 6912500), (4, 5184375), (5, 4147500), (6, 3456250), (7, 2962500), (10, 2073750), (12, 1728125), (14, 1481250), (15, 1382500), (20, 1036875), (21, 987500), (25, 829500), (28, 740625), (30, 691250), (35, 592500), (42, 493750), (50, 414750), (60, 345625), (70, 296250), (75, 276500), (79, 262500), (84, 246875), (100, 207375), (105, 197500), (125, 165900), (140, 148125), (150, 138250), (158, 131250), (175, 118500), (210, 98750), (237, 87500), (250, 82950), (300, 69125), (316, 65625), (350, 59250), (375, 55300), (395, 52500), (420, 49375), (474, 43750), (500, 41475), (525, 39500), (553, 37500), (625, 33180), (700, 29625), (750, 27650), (790, 26250), (875, 23700), (948, 21875), (1050, 19750), (1106, 18750), (1185, 17500), (1250, 16590), (1500, 13825), (1580, 13125), (1659, 12500), (1750, 11850), (1875, 11060), (1975, 10500), (2100, 9875), (2212, 9375), (2370, 8750), (2500, 8295), (2625, 7900), (2765, 7500), (3125, 6636), (3318, 6250), (3500, 5925), (3750, 5530), (3950, 5250), (4375, 4740)]