20153203760

素因数分解:

$2^4\times 5^1\times {\mathrm{3457}}^1\times {\mathrm{72871}}^1$

素因数の和:76341

約数の個数: 40

約数和(自身を含む): 46870395936

約数和(自身を除く): 26717192176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3457, 6914, 13828, 17285, 27656, 34570, 55312, 69140, 72871, 138280, 145742, 276560, 291484, 364355, 582968, 728710, 1165936, 1457420, 2914840, 5829680, 251915047, 503830094, 1007660188, 1259575235, 2015320376, 2519150470, 4030640752, 5038300940, 10076601880, 20153203760]

約数ペア:

[(1, 20153203760), (2, 10076601880), (4, 5038300940), (5, 4030640752), (8, 2519150470), (10, 2015320376), (16, 1259575235), (20, 1007660188), (40, 503830094), (80, 251915047), (3457, 5829680), (6914, 2914840), (13828, 1457420), (17285, 1165936), (27656, 728710), (34570, 582968), (55312, 364355), (69140, 291484), (72871, 276560), (138280, 145742)]