81006660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{269}}^1$

素因数の和:530

約数の個数: 144

約数和(自身を含む): 283046400

約数和(自身を除く): 202039740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 239, 252, 269, 315, 420, 478, 538, 630, 717, 807, 956, 1076, 1195, 1260, 1345, 1434, 1614, 1673, 1883, 2151, 2390, 2421, 2690, 2868, 3228, 3346, 3585, 3766, 4035, 4302, 4780, 4842, 5019, 5380, 5649, 6692, 7170, 7532, 8070, 8365, 8604, 9415, 9684, 10038, 10755, 11298, 12105, 14340, 15057, 16140, 16730, 16947, 18830, 20076, 21510, 22596, 24210, 25095, 28245, 30114, 33460, 33894, 37660, 43020, 48420, 50190, 56490, 60228, 64291, 67788, 75285, 84735, 100380, 112980, 128582, 150570, 169470, 192873, 257164, 301140, 321455, 338940, 385746, 450037, 578619, 642910, 771492, 900074, 964365, 1157238, 1285820, 1350111, 1800148, 1928730, 2250185, 2314476, 2700222, 2893095, 3857460, 4050333, 4500370, 5400444, 5786190, 6750555, 8100666, 9000740, 11572380, 13501110, 16201332, 20251665, 27002220, 40503330, 81006660]

約数ペア:

[(1, 81006660), (2, 40503330), (3, 27002220), (4, 20251665), (5, 16201332), (6, 13501110), (7, 11572380), (9, 9000740), (10, 8100666), (12, 6750555), (14, 5786190), (15, 5400444), (18, 4500370), (20, 4050333), (21, 3857460), (28, 2893095), (30, 2700222), (35, 2314476), (36, 2250185), (42, 1928730), (45, 1800148), (60, 1350111), (63, 1285820), (70, 1157238), (84, 964365), (90, 900074), (105, 771492), (126, 642910), (140, 578619), (180, 450037), (210, 385746), (239, 338940), (252, 321455), (269, 301140), (315, 257164), (420, 192873), (478, 169470), (538, 150570), (630, 128582), (717, 112980), (807, 100380), (956, 84735), (1076, 75285), (1195, 67788), (1260, 64291), (1345, 60228), (1434, 56490), (1614, 50190), (1673, 48420), (1883, 43020), (2151, 37660), (2390, 33894), (2421, 33460), (2690, 30114), (2868, 28245), (3228, 25095), (3346, 24210), (3585, 22596), (3766, 21510), (4035, 20076), (4302, 18830), (4780, 16947), (4842, 16730), (5019, 16140), (5380, 15057), (5649, 14340), (6692, 12105), (7170, 11298), (7532, 10755), (8070, 10038), (8365, 9684), (8604, 9415)]