20046880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2557}}^1$

素因数の和:2586

約数の個数: 72

約数和(自身を含む): 55114668

約数和(自身を除く): 35067788

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2557, 3920, 5114, 7840, 10228, 12785, 17899, 20456, 25570, 35798, 40912, 51140, 71596, 81824, 89495, 102280, 125293, 143192, 178990, 204560, 250586, 286384, 357980, 409120, 501172, 572768, 626465, 715960, 1002344, 1252930, 1431920, 2004688, 2505860, 2863840, 4009376, 5011720, 10023440, 20046880]

約数ペア:

[(1, 20046880), (2, 10023440), (4, 5011720), (5, 4009376), (7, 2863840), (8, 2505860), (10, 2004688), (14, 1431920), (16, 1252930), (20, 1002344), (28, 715960), (32, 626465), (35, 572768), (40, 501172), (49, 409120), (56, 357980), (70, 286384), (80, 250586), (98, 204560), (112, 178990), (140, 143192), (160, 125293), (196, 102280), (224, 89495), (245, 81824), (280, 71596), (392, 51140), (490, 40912), (560, 35798), (784, 25570), (980, 20456), (1120, 17899), (1568, 12785), (1960, 10228), (2557, 7840), (3920, 5114)]