20790910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{1297}}^1$

素因数の和:1540

約数の個数: 32

約数和(自身を含む): 42989760

約数和(自身を除く): 22198850

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 229, 458, 1145, 1297, 1603, 2290, 2594, 3206, 6485, 8015, 9079, 12970, 16030, 18158, 45395, 90790, 297013, 594026, 1485065, 2079091, 2970130, 4158182, 10395455, 20790910]

約数ペア:

[(1, 20790910), (2, 10395455), (5, 4158182), (7, 2970130), (10, 2079091), (14, 1485065), (35, 594026), (70, 297013), (229, 90790), (458, 45395), (1145, 18158), (1297, 16030), (1603, 12970), (2290, 9079), (2594, 8015), (3206, 6485)]