21369960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:488

約数の個数: 128

約数和(自身を含む): 72921600

約数和(自身を除く): 51551640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 47, 54, 60, 72, 90, 94, 108, 120, 135, 141, 180, 188, 216, 235, 270, 282, 360, 376, 421, 423, 470, 540, 564, 705, 842, 846, 940, 1080, 1128, 1263, 1269, 1410, 1684, 1692, 1880, 2105, 2115, 2526, 2538, 2820, 3368, 3384, 3789, 4210, 4230, 5052, 5076, 5640, 6315, 6345, 7578, 8420, 8460, 10104, 10152, 11367, 12630, 12690, 15156, 16840, 16920, 18945, 19787, 22734, 25260, 25380, 30312, 37890, 39574, 45468, 50520, 50760, 56835, 59361, 75780, 79148, 90936, 98935, 113670, 118722, 151560, 158296, 178083, 197870, 227340, 237444, 296805, 356166, 395740, 454680, 474888, 534249, 593610, 712332, 791480, 890415, 1068498, 1187220, 1424664, 1780830, 2136996, 2374440, 2671245, 3561660, 4273992, 5342490, 7123320, 10684980, 21369960]

約数ペア:

[(1, 21369960), (2, 10684980), (3, 7123320), (4, 5342490), (5, 4273992), (6, 3561660), (8, 2671245), (9, 2374440), (10, 2136996), (12, 1780830), (15, 1424664), (18, 1187220), (20, 1068498), (24, 890415), (27, 791480), (30, 712332), (36, 593610), (40, 534249), (45, 474888), (47, 454680), (54, 395740), (60, 356166), (72, 296805), (90, 237444), (94, 227340), (108, 197870), (120, 178083), (135, 158296), (141, 151560), (180, 118722), (188, 113670), (216, 98935), (235, 90936), (270, 79148), (282, 75780), (360, 59361), (376, 56835), (421, 50760), (423, 50520), (470, 45468), (540, 39574), (564, 37890), (705, 30312), (842, 25380), (846, 25260), (940, 22734), (1080, 19787), (1128, 18945), (1263, 16920), (1269, 16840), (1410, 15156), (1684, 12690), (1692, 12630), (1880, 11367), (2105, 10152), (2115, 10104), (2526, 8460), (2538, 8420), (2820, 7578), (3368, 6345), (3384, 6315), (3789, 5640), (4210, 5076), (4230, 5052)]