21026670

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{449}}^1$

素因数の和:689

約数の個数: 64

約数和(自身を含む): 58060800

約数和(自身を除く): 37034130

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 223, 446, 449, 669, 898, 1115, 1338, 1347, 1561, 2230, 2245, 2694, 3122, 3143, 3345, 4490, 4683, 6286, 6690, 6735, 7805, 9366, 9429, 13470, 15610, 15715, 18858, 23415, 31430, 46830, 47145, 94290, 100127, 200254, 300381, 500635, 600762, 700889, 1001270, 1401778, 1501905, 2102667, 3003810, 3504445, 4205334, 7008890, 10513335, 21026670]

約数ペア:

[(1, 21026670), (2, 10513335), (3, 7008890), (5, 4205334), (6, 3504445), (7, 3003810), (10, 2102667), (14, 1501905), (15, 1401778), (21, 1001270), (30, 700889), (35, 600762), (42, 500635), (70, 300381), (105, 200254), (210, 100127), (223, 94290), (446, 47145), (449, 46830), (669, 31430), (898, 23415), (1115, 18858), (1338, 15715), (1347, 15610), (1561, 13470), (2230, 9429), (2245, 9366), (2694, 7805), (3122, 6735), (3143, 6690), (3345, 6286), (4490, 4683)]