28004794880

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{352883}}^1$

素因数の和:352937

約数の個数: 80

約数和(自身を含む): 69312063744

約数和(自身を除く): 41307268864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 352883, 705766, 1411532, 1764415, 2823064, 3528830, 5646128, 7057660, 10939373, 11292256, 14115320, 21878746, 22584512, 28230640, 43757492, 45169024, 54696865, 56461280, 87514984, 90338048, 109393730, 112922560, 175029968, 180676096, 218787460, 225845120, 350059936, 437574920, 451690240, 700119872, 875149840, 903380480, 1400239744, 1750299680, 2800479488, 3500599360, 5600958976, 7001198720, 14002397440, 28004794880]

約数ペア:

[(1, 28004794880), (2, 14002397440), (4, 7001198720), (5, 5600958976), (8, 3500599360), (10, 2800479488), (16, 1750299680), (20, 1400239744), (31, 903380480), (32, 875149840), (40, 700119872), (62, 451690240), (64, 437574920), (80, 350059936), (124, 225845120), (128, 218787460), (155, 180676096), (160, 175029968), (248, 112922560), (256, 109393730), (310, 90338048), (320, 87514984), (496, 56461280), (512, 54696865), (620, 45169024), (640, 43757492), (992, 28230640), (1240, 22584512), (1280, 21878746), (1984, 14115320), (2480, 11292256), (2560, 10939373), (3968, 7057660), (4960, 5646128), (7936, 3528830), (9920, 2823064), (15872, 1764415), (19840, 1411532), (39680, 705766), (79360, 352883)]