245985320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{9871}}^1$

素因数の和:9978

約数の個数: 64

約数和(自身を含む): 639705600

約数和(自身を除く): 393720280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3560, 4984, 6230, 9871, 12460, 19742, 24920, 39484, 49355, 69097, 78968, 98710, 138194, 197420, 276388, 345485, 394840, 552776, 690970, 878519, 1381940, 1757038, 2763880, 3514076, 4392595, 6149633, 7028152, 8785190, 12299266, 17570380, 24598532, 30748165, 35140760, 49197064, 61496330, 122992660, 245985320]

約数ペア:

[(1, 245985320), (2, 122992660), (4, 61496330), (5, 49197064), (7, 35140760), (8, 30748165), (10, 24598532), (14, 17570380), (20, 12299266), (28, 8785190), (35, 7028152), (40, 6149633), (56, 4392595), (70, 3514076), (89, 2763880), (140, 1757038), (178, 1381940), (280, 878519), (356, 690970), (445, 552776), (623, 394840), (712, 345485), (890, 276388), (1246, 197420), (1780, 138194), (2492, 98710), (3115, 78968), (3560, 69097), (4984, 49355), (6230, 39484), (9871, 24920), (12460, 19742)]