40940000

素因数分解:

$2^5\times 5^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 120

約数和(自身を含む): 106278480

約数和(自身を除く): 65338480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 80, 89, 92, 100, 115, 125, 160, 178, 184, 200, 230, 250, 356, 368, 400, 445, 460, 500, 575, 625, 712, 736, 800, 890, 920, 1000, 1150, 1250, 1424, 1780, 1840, 2000, 2047, 2225, 2300, 2500, 2848, 2875, 3560, 3680, 4000, 4094, 4450, 4600, 5000, 5750, 7120, 8188, 8900, 9200, 10000, 10235, 11125, 11500, 14240, 14375, 16376, 17800, 18400, 20000, 20470, 22250, 23000, 28750, 32752, 35600, 40940, 44500, 46000, 51175, 55625, 57500, 65504, 71200, 81880, 89000, 92000, 102350, 111250, 115000, 163760, 178000, 204700, 222500, 230000, 255875, 327520, 356000, 409400, 445000, 460000, 511750, 818800, 890000, 1023500, 1279375, 1637600, 1780000, 2047000, 2558750, 4094000, 5117500, 8188000, 10235000, 20470000, 40940000]

約数ペア:

[(1, 40940000), (2, 20470000), (4, 10235000), (5, 8188000), (8, 5117500), (10, 4094000), (16, 2558750), (20, 2047000), (23, 1780000), (25, 1637600), (32, 1279375), (40, 1023500), (46, 890000), (50, 818800), (80, 511750), (89, 460000), (92, 445000), (100, 409400), (115, 356000), (125, 327520), (160, 255875), (178, 230000), (184, 222500), (200, 204700), (230, 178000), (250, 163760), (356, 115000), (368, 111250), (400, 102350), (445, 92000), (460, 89000), (500, 81880), (575, 71200), (625, 65504), (712, 57500), (736, 55625), (800, 51175), (890, 46000), (920, 44500), (1000, 40940), (1150, 35600), (1250, 32752), (1424, 28750), (1780, 23000), (1840, 22250), (2000, 20470), (2047, 20000), (2225, 18400), (2300, 17800), (2500, 16376), (2848, 14375), (2875, 14240), (3560, 11500), (3680, 11125), (4000, 10235), (4094, 10000), (4450, 9200), (4600, 8900), (5000, 8188), (5750, 7120)]