21431251080

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{640121}}^1$

素因数の和:640172

約数の個数: 128

約数和(自身を含む): 73742054400

約数和(自身を除く): 52310803320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 90, 93, 108, 120, 124, 135, 155, 180, 186, 216, 248, 270, 279, 310, 360, 372, 465, 540, 558, 620, 744, 837, 930, 1080, 1116, 1240, 1395, 1674, 1860, 2232, 2790, 3348, 3720, 4185, 5580, 6696, 8370, 11160, 16740, 33480, 640121, 1280242, 1920363, 2560484, 3200605, 3840726, 5120968, 5761089, 6401210, 7681452, 9601815, 11522178, 12802420, 15362904, 17283267, 19203630, 19843751, 23044356, 25604840, 28805445, 34566534, 38407260, 39687502, 46088712, 57610890, 59531253, 69133068, 76814520, 79375004, 86416335, 99218755, 115221780, 119062506, 138266136, 158750008, 172832670, 178593759, 198437510, 230443560, 238125012, 297656265, 345665340, 357187518, 396875020, 476250024, 535781277, 595312530, 691330680, 714375036, 793750040, 892968795, 1071562554, 1190625060, 1428750072, 1785937590, 2143125108, 2381250120, 2678906385, 3571875180, 4286250216, 5357812770, 7143750360, 10715625540, 21431251080]

約数ペア:

[(1, 21431251080), (2, 10715625540), (3, 7143750360), (4, 5357812770), (5, 4286250216), (6, 3571875180), (8, 2678906385), (9, 2381250120), (10, 2143125108), (12, 1785937590), (15, 1428750072), (18, 1190625060), (20, 1071562554), (24, 892968795), (27, 793750040), (30, 714375036), (31, 691330680), (36, 595312530), (40, 535781277), (45, 476250024), (54, 396875020), (60, 357187518), (62, 345665340), (72, 297656265), (90, 238125012), (93, 230443560), (108, 198437510), (120, 178593759), (124, 172832670), (135, 158750008), (155, 138266136), (180, 119062506), (186, 115221780), (216, 99218755), (248, 86416335), (270, 79375004), (279, 76814520), (310, 69133068), (360, 59531253), (372, 57610890), (465, 46088712), (540, 39687502), (558, 38407260), (620, 34566534), (744, 28805445), (837, 25604840), (930, 23044356), (1080, 19843751), (1116, 19203630), (1240, 17283267), (1395, 15362904), (1674, 12802420), (1860, 11522178), (2232, 9601815), (2790, 7681452), (3348, 6401210), (3720, 5761089), (4185, 5120968), (5580, 3840726), (6696, 3200605), (8370, 2560484), (11160, 1920363), (16740, 1280242), (33480, 640121)]