28778940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1583}}^1$

素因数の和:1699

約数の個数: 72

約数和(自身を含む): 88216128

約数和(自身を除く): 59437188

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1212, 1515, 1583, 1818, 2020, 3030, 3166, 3636, 4545, 4749, 6060, 6332, 7915, 9090, 9498, 14247, 15830, 18180, 18996, 23745, 28494, 31660, 47490, 56988, 71235, 94980, 142470, 159883, 284940, 319766, 479649, 639532, 799415, 959298, 1438947, 1598830, 1918596, 2398245, 2877894, 3197660, 4796490, 5755788, 7194735, 9592980, 14389470, 28778940]

約数ペア:

[(1, 28778940), (2, 14389470), (3, 9592980), (4, 7194735), (5, 5755788), (6, 4796490), (9, 3197660), (10, 2877894), (12, 2398245), (15, 1918596), (18, 1598830), (20, 1438947), (30, 959298), (36, 799415), (45, 639532), (60, 479649), (90, 319766), (101, 284940), (180, 159883), (202, 142470), (303, 94980), (404, 71235), (505, 56988), (606, 47490), (909, 31660), (1010, 28494), (1212, 23745), (1515, 18996), (1583, 18180), (1818, 15830), (2020, 14247), (3030, 9498), (3166, 9090), (3636, 7915), (4545, 6332), (4749, 6060)]