20956988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 42364224

約数和(自身を除く): 21407236

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 151, 157, 221, 302, 314, 442, 604, 628, 884, 1963, 2041, 2567, 2669, 3926, 4082, 5134, 5338, 7852, 8164, 10268, 10676, 23707, 33371, 34697, 47414, 66742, 69394, 94828, 133484, 138788, 308191, 403019, 616382, 806038, 1232764, 1612076, 5239247, 10478494, 20956988]

約数ペア:

[(1, 20956988), (2, 10478494), (4, 5239247), (13, 1612076), (17, 1232764), (26, 806038), (34, 616382), (52, 403019), (68, 308191), (151, 138788), (157, 133484), (221, 94828), (302, 69394), (314, 66742), (442, 47414), (604, 34697), (628, 33371), (884, 23707), (1963, 10676), (2041, 10268), (2567, 8164), (2669, 7852), (3926, 5338), (4082, 5134)]