78654800

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{4013}}^1$

素因数の和:4045

約数の個数: 90

約数和(自身を含む): 219874878

約数和(自身を除く): 141220078

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4013, 4900, 8026, 9800, 16052, 19600, 20065, 28091, 32104, 40130, 56182, 64208, 80260, 100325, 112364, 140455, 160520, 196637, 200650, 224728, 280910, 321040, 393274, 401300, 449456, 561820, 702275, 786548, 802600, 983185, 1123640, 1404550, 1573096, 1605200, 1966370, 2247280, 2809100, 3146192, 3932740, 4915925, 5618200, 7865480, 9831850, 11236400, 15730960, 19663700, 39327400, 78654800]

約数ペア:

[(1, 78654800), (2, 39327400), (4, 19663700), (5, 15730960), (7, 11236400), (8, 9831850), (10, 7865480), (14, 5618200), (16, 4915925), (20, 3932740), (25, 3146192), (28, 2809100), (35, 2247280), (40, 1966370), (49, 1605200), (50, 1573096), (56, 1404550), (70, 1123640), (80, 983185), (98, 802600), (100, 786548), (112, 702275), (140, 561820), (175, 449456), (196, 401300), (200, 393274), (245, 321040), (280, 280910), (350, 224728), (392, 200650), (400, 196637), (490, 160520), (560, 140455), (700, 112364), (784, 100325), (980, 80260), (1225, 64208), (1400, 56182), (1960, 40130), (2450, 32104), (2800, 28091), (3920, 20065), (4013, 19600), (4900, 16052), (8026, 9800)]