20009227520

素因数分解:

$2^8\times 5^1\times {\mathrm{3001}}^1\times {\mathrm{5209}}^1$

素因数の和:8231

約数の個数: 72

約数和(自身を含む): 47953527720

約数和(自身を除く): 27944300200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 3001, 5209, 6002, 10418, 12004, 15005, 20836, 24008, 26045, 30010, 41672, 48016, 52090, 60020, 83344, 96032, 104180, 120040, 166688, 192064, 208360, 240080, 333376, 384128, 416720, 480160, 666752, 768256, 833440, 960320, 1333504, 1666880, 1920640, 3333760, 3841280, 6667520, 15632209, 31264418, 62528836, 78161045, 125057672, 156322090, 250115344, 312644180, 500230688, 625288360, 1000461376, 1250576720, 2000922752, 2501153440, 4001845504, 5002306880, 10004613760, 20009227520]

約数ペア:

[(1, 20009227520), (2, 10004613760), (4, 5002306880), (5, 4001845504), (8, 2501153440), (10, 2000922752), (16, 1250576720), (20, 1000461376), (32, 625288360), (40, 500230688), (64, 312644180), (80, 250115344), (128, 156322090), (160, 125057672), (256, 78161045), (320, 62528836), (640, 31264418), (1280, 15632209), (3001, 6667520), (5209, 3841280), (6002, 3333760), (10418, 1920640), (12004, 1666880), (15005, 1333504), (20836, 960320), (24008, 833440), (26045, 768256), (30010, 666752), (41672, 480160), (48016, 416720), (52090, 384128), (60020, 333376), (83344, 240080), (96032, 208360), (104180, 192064), (120040, 166688)]