20951910

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4751}}^1$

素因数の和:4778

約数の個数: 72

約数和(自身を含む): 63382176

約数和(自身を除く): 42430266

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4751, 9502, 14253, 23755, 28506, 33257, 42759, 47510, 66514, 71265, 85518, 99771, 142530, 166285, 199542, 213795, 232799, 299313, 332570, 427590, 465598, 498855, 598626, 698397, 997710, 1163995, 1396794, 1496565, 2095191, 2327990, 2993130, 3491985, 4190382, 6983970, 10475955, 20951910]

約数ペア:

[(1, 20951910), (2, 10475955), (3, 6983970), (5, 4190382), (6, 3491985), (7, 2993130), (9, 2327990), (10, 2095191), (14, 1496565), (15, 1396794), (18, 1163995), (21, 997710), (30, 698397), (35, 598626), (42, 498855), (45, 465598), (49, 427590), (63, 332570), (70, 299313), (90, 232799), (98, 213795), (105, 199542), (126, 166285), (147, 142530), (210, 99771), (245, 85518), (294, 71265), (315, 66514), (441, 47510), (490, 42759), (630, 33257), (735, 28506), (882, 23755), (1470, 14253), (2205, 9502), (4410, 4751)]