289770640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1\times {\mathrm{353}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 699526656

約数和(自身を除く): 409756016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 331, 353, 496, 620, 662, 706, 1240, 1324, 1412, 1655, 1765, 2480, 2648, 2824, 3310, 3530, 5296, 5648, 6620, 7060, 10261, 10943, 13240, 14120, 20522, 21886, 26480, 28240, 41044, 43772, 51305, 54715, 82088, 87544, 102610, 109430, 116843, 164176, 175088, 205220, 218860, 233686, 410440, 437720, 467372, 584215, 820880, 875440, 934744, 1168430, 1869488, 2336860, 3622133, 4673720, 7244266, 9347440, 14488532, 18110665, 28977064, 36221330, 57954128, 72442660, 144885320, 289770640]

約数ペア:

[(1, 289770640), (2, 144885320), (4, 72442660), (5, 57954128), (8, 36221330), (10, 28977064), (16, 18110665), (20, 14488532), (31, 9347440), (40, 7244266), (62, 4673720), (80, 3622133), (124, 2336860), (155, 1869488), (248, 1168430), (310, 934744), (331, 875440), (353, 820880), (496, 584215), (620, 467372), (662, 437720), (706, 410440), (1240, 233686), (1324, 218860), (1412, 205220), (1655, 175088), (1765, 164176), (2480, 116843), (2648, 109430), (2824, 102610), (3310, 87544), (3530, 82088), (5296, 54715), (5648, 51305), (6620, 43772), (7060, 41044), (10261, 28240), (10943, 26480), (13240, 21886), (14120, 20522)]