128810240

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7741}}^1$

素因数の和:7775

約数の個数: 72

約数和(自身を含む): 332317608

約数和(自身を除く): 203507368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 7741, 8320, 15482, 16640, 30964, 38705, 61928, 77410, 100633, 123856, 154820, 201266, 247712, 309640, 402532, 495424, 503165, 619280, 805064, 990848, 1006330, 1238560, 1610128, 1981696, 2012660, 2477120, 3220256, 4025320, 4954240, 6440512, 8050640, 9908480, 12881024, 16101280, 25762048, 32202560, 64405120, 128810240]

約数ペア:

[(1, 128810240), (2, 64405120), (4, 32202560), (5, 25762048), (8, 16101280), (10, 12881024), (13, 9908480), (16, 8050640), (20, 6440512), (26, 4954240), (32, 4025320), (40, 3220256), (52, 2477120), (64, 2012660), (65, 1981696), (80, 1610128), (104, 1238560), (128, 1006330), (130, 990848), (160, 805064), (208, 619280), (256, 503165), (260, 495424), (320, 402532), (416, 309640), (520, 247712), (640, 201266), (832, 154820), (1040, 123856), (1280, 100633), (1664, 77410), (2080, 61928), (3328, 38705), (4160, 30964), (7741, 16640), (8320, 15482)]