21791790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14243}}^1$

素因数の和:14273

約数の個数: 48

約数和(自身を含む): 59995728

約数和(自身を除く): 38203938

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 306, 510, 765, 1530, 14243, 28486, 42729, 71215, 85458, 128187, 142430, 213645, 242131, 256374, 427290, 484262, 640935, 726393, 1210655, 1281870, 1452786, 2179179, 2421310, 3631965, 4358358, 7263930, 10895895, 21791790]

約数ペア:

[(1, 21791790), (2, 10895895), (3, 7263930), (5, 4358358), (6, 3631965), (9, 2421310), (10, 2179179), (15, 1452786), (17, 1281870), (18, 1210655), (30, 726393), (34, 640935), (45, 484262), (51, 427290), (85, 256374), (90, 242131), (102, 213645), (153, 142430), (170, 128187), (255, 85458), (306, 71215), (510, 42729), (765, 28486), (1530, 14243)]