20485430

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{431}}^1$

素因数の和:549

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 22951306

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 97, 98, 194, 245, 431, 485, 490, 679, 862, 970, 1358, 2155, 3017, 3395, 4310, 4753, 6034, 6790, 9506, 15085, 21119, 23765, 30170, 41807, 42238, 47530, 83614, 105595, 209035, 211190, 292649, 418070, 585298, 1463245, 2048543, 2926490, 4097086, 10242715, 20485430]

約数ペア:

[(1, 20485430), (2, 10242715), (5, 4097086), (7, 2926490), (10, 2048543), (14, 1463245), (35, 585298), (49, 418070), (70, 292649), (97, 211190), (98, 209035), (194, 105595), (245, 83614), (431, 47530), (485, 42238), (490, 41807), (679, 30170), (862, 23765), (970, 21119), (1358, 15085), (2155, 9506), (3017, 6790), (3395, 6034), (4310, 4753)]