About the Number

210809920

210809919 ← → 210809921

2進数表記:1100100100001011010001000000

漢数字表記:二億千八十万九千九百二十

素因数分解:

2 6 × 5 1 × 31 1 × 79 1 × 269 1

素因数の和:396
約数の個数: 112
約数和(自身を含む): 526694400
約数和(自身を除く): 315884480

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 79, 80, 124, 155, 158, 160, 248, 269, 310, 316, 320, 395, 496, 538, 620, 632, 790, 992, 1076, 1240, 1264, 1345, 1580, 1984, 2152, 2449, 2480, 2528, 2690, 3160, 4304, 4898, 4960, 5056, 5380, 6320, 8339, 8608, 9796, 9920, 10760, 12245, 12640, 16678, 17216, 19592, 21251, 21520, 24490, 25280, 33356, 39184, 41695, 42502, 43040, 48980, 66712, 78368, 83390, 85004, 86080, 97960, 106255, 133424, 156736, 166780, 170008, 195920, 212510, 266848, 333560, 340016, 391840, 425020, 533696, 658781, 667120, 680032, 783680, 850040, 1317562, 1334240, 1360064, 1700080, 2635124, 2668480, 3293905, 3400160, 5270248, 6587810, 6800320, 10540496, 13175620, 21080992, 26351240, 42161984, 52702480, 105404960, 210809920]

約数ペア:
[(1, 210809920), (2, 105404960), (4, 52702480), (5, 42161984), (8, 26351240), (10, 21080992), (16, 13175620), (20, 10540496), (31, 6800320), (32, 6587810), (40, 5270248), (62, 3400160), (64, 3293905), (79, 2668480), (80, 2635124), (124, 1700080), (155, 1360064), (158, 1334240), (160, 1317562), (248, 850040), (269, 783680), (310, 680032), (316, 667120), (320, 658781), (395, 533696), (496, 425020), (538, 391840), (620, 340016), (632, 333560), (790, 266848), (992, 212510), (1076, 195920), (1240, 170008), (1264, 166780), (1345, 156736), (1580, 133424), (1984, 106255), (2152, 97960), (2449, 86080), (2480, 85004), (2528, 83390), (2690, 78368), (3160, 66712), (4304, 48980), (4898, 43040), (4960, 42502), (5056, 41695), (5380, 39184), (6320, 33356), (8339, 25280), (8608, 24490), (9796, 21520), (9920, 21251), (10760, 19592), (12245, 17216), (12640, 16678)]

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