21118720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2357}}^1$

素因数の和:2385

約数の個数: 72

約数和(自身を含む): 57837024

約数和(自身を除く): 36718304

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 2357, 4480, 4714, 8960, 9428, 11785, 16499, 18856, 23570, 32998, 37712, 47140, 65996, 75424, 82495, 94280, 131992, 150848, 164990, 188560, 263984, 301696, 329980, 377120, 527968, 603392, 659960, 754240, 1055936, 1319920, 1508480, 2111872, 2639840, 3016960, 4223744, 5279680, 10559360, 21118720]

約数ペア:

[(1, 21118720), (2, 10559360), (4, 5279680), (5, 4223744), (7, 3016960), (8, 2639840), (10, 2111872), (14, 1508480), (16, 1319920), (20, 1055936), (28, 754240), (32, 659960), (35, 603392), (40, 527968), (56, 377120), (64, 329980), (70, 301696), (80, 263984), (112, 188560), (128, 164990), (140, 150848), (160, 131992), (224, 94280), (256, 82495), (280, 75424), (320, 65996), (448, 47140), (560, 37712), (640, 32998), (896, 23570), (1120, 18856), (1280, 16499), (1792, 11785), (2240, 9428), (2357, 8960), (4480, 4714)]