20513305720

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1\times {\mathrm{9041}}^1$

素因数の和:9616

約数の個数: 64

約数和(自身を含む): 46619828640

約数和(自身を除く): 26106522920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 433, 524, 655, 866, 1048, 1310, 1732, 2165, 2620, 3464, 4330, 5240, 8660, 9041, 17320, 18082, 36164, 45205, 56723, 72328, 90410, 113446, 180820, 226892, 283615, 361640, 453784, 567230, 1134460, 1184371, 2268920, 2368742, 3914753, 4737484, 5921855, 7829506, 9474968, 11843710, 15659012, 19573765, 23687420, 31318024, 39147530, 47374840, 78295060, 156590120, 512832643, 1025665286, 2051330572, 2564163215, 4102661144, 5128326430, 10256652860, 20513305720]

約数ペア:

[(1, 20513305720), (2, 10256652860), (4, 5128326430), (5, 4102661144), (8, 2564163215), (10, 2051330572), (20, 1025665286), (40, 512832643), (131, 156590120), (262, 78295060), (433, 47374840), (524, 39147530), (655, 31318024), (866, 23687420), (1048, 19573765), (1310, 15659012), (1732, 11843710), (2165, 9474968), (2620, 7829506), (3464, 5921855), (4330, 4737484), (5240, 3914753), (8660, 2368742), (9041, 2268920), (17320, 1184371), (18082, 1134460), (36164, 567230), (45205, 453784), (56723, 361640), (72328, 283615), (90410, 226892), (113446, 180820)]