20903680

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2333}}^1$

素因数の和:2361

約数の個数: 72

約数和(自身を含む): 57248352

約数和(自身を除く): 36344672

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, 2333, 4480, 4666, 8960, 9332, 11665, 16331, 18664, 23330, 32662, 37328, 46660, 65324, 74656, 81655, 93320, 130648, 149312, 163310, 186640, 261296, 298624, 326620, 373280, 522592, 597248, 653240, 746560, 1045184, 1306480, 1493120, 2090368, 2612960, 2986240, 4180736, 5225920, 10451840, 20903680]

約数ペア:

[(1, 20903680), (2, 10451840), (4, 5225920), (5, 4180736), (7, 2986240), (8, 2612960), (10, 2090368), (14, 1493120), (16, 1306480), (20, 1045184), (28, 746560), (32, 653240), (35, 597248), (40, 522592), (56, 373280), (64, 326620), (70, 298624), (80, 261296), (112, 186640), (128, 163310), (140, 149312), (160, 130648), (224, 93320), (256, 81655), (280, 74656), (320, 65324), (448, 46660), (560, 37328), (640, 32662), (896, 23330), (1120, 18664), (1280, 16331), (1792, 11665), (2240, 9332), (2333, 8960), (4480, 4666)]