72400000

素因数分解:

$2^7\times 5^5\times {\mathrm{181}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 181277460

約数和(自身を除く): 108877460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 181, 200, 250, 320, 362, 400, 500, 625, 640, 724, 800, 905, 1000, 1250, 1448, 1600, 1810, 2000, 2500, 2896, 3125, 3200, 3620, 4000, 4525, 5000, 5792, 6250, 7240, 8000, 9050, 10000, 11584, 12500, 14480, 16000, 18100, 20000, 22625, 23168, 25000, 28960, 36200, 40000, 45250, 50000, 57920, 72400, 80000, 90500, 100000, 113125, 115840, 144800, 181000, 200000, 226250, 289600, 362000, 400000, 452500, 565625, 579200, 724000, 905000, 1131250, 1448000, 1810000, 2262500, 2896000, 3620000, 4525000, 7240000, 9050000, 14480000, 18100000, 36200000, 72400000]

約数ペア:

[(1, 72400000), (2, 36200000), (4, 18100000), (5, 14480000), (8, 9050000), (10, 7240000), (16, 4525000), (20, 3620000), (25, 2896000), (32, 2262500), (40, 1810000), (50, 1448000), (64, 1131250), (80, 905000), (100, 724000), (125, 579200), (128, 565625), (160, 452500), (181, 400000), (200, 362000), (250, 289600), (320, 226250), (362, 200000), (400, 181000), (500, 144800), (625, 115840), (640, 113125), (724, 100000), (800, 90500), (905, 80000), (1000, 72400), (1250, 57920), (1448, 50000), (1600, 45250), (1810, 40000), (2000, 36200), (2500, 28960), (2896, 25000), (3125, 23168), (3200, 22625), (3620, 20000), (4000, 18100), (4525, 16000), (5000, 14480), (5792, 12500), (6250, 11584), (7240, 10000), (8000, 9050)]