640210000

素因数分解:

$2^4\times 5^4\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:978

約数の個数: 100

約数和(自身を含む): 1573037092

約数和(自身を除く): 932827092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 73, 80, 100, 125, 146, 200, 250, 292, 365, 400, 500, 584, 625, 730, 877, 1000, 1168, 1250, 1460, 1754, 1825, 2000, 2500, 2920, 3508, 3650, 4385, 5000, 5840, 7016, 7300, 8770, 9125, 10000, 14032, 14600, 17540, 18250, 21925, 29200, 35080, 36500, 43850, 45625, 64021, 70160, 73000, 87700, 91250, 109625, 128042, 146000, 175400, 182500, 219250, 256084, 320105, 350800, 365000, 438500, 512168, 548125, 640210, 730000, 877000, 1024336, 1096250, 1280420, 1600525, 1754000, 2192500, 2560840, 3201050, 4385000, 5121680, 6402100, 8002625, 8770000, 12804200, 16005250, 25608400, 32010500, 40013125, 64021000, 80026250, 128042000, 160052500, 320105000, 640210000]

約数ペア:

[(1, 640210000), (2, 320105000), (4, 160052500), (5, 128042000), (8, 80026250), (10, 64021000), (16, 40013125), (20, 32010500), (25, 25608400), (40, 16005250), (50, 12804200), (73, 8770000), (80, 8002625), (100, 6402100), (125, 5121680), (146, 4385000), (200, 3201050), (250, 2560840), (292, 2192500), (365, 1754000), (400, 1600525), (500, 1280420), (584, 1096250), (625, 1024336), (730, 877000), (877, 730000), (1000, 640210), (1168, 548125), (1250, 512168), (1460, 438500), (1754, 365000), (1825, 350800), (2000, 320105), (2500, 256084), (2920, 219250), (3508, 182500), (3650, 175400), (4385, 146000), (5000, 128042), (5840, 109625), (7016, 91250), (7300, 87700), (8770, 73000), (9125, 70160), (10000, 64021), (14032, 45625), (14600, 43850), (17540, 36500), (18250, 35080), (21925, 29200)]