19802655

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 38514528

約数和(自身を除く): 18711873

約数列:

[1, 3, 5, 9, 15, 19, 23, 45, 53, 57, 69, 95, 115, 159, 171, 207, 265, 285, 345, 361, 437, 477, 795, 855, 1007, 1035, 1083, 1219, 1311, 1805, 2185, 2385, 3021, 3249, 3657, 3933, 5035, 5415, 6095, 6555, 8303, 9063, 10971, 15105, 16245, 18285, 19133, 19665, 23161, 24909, 41515, 45315, 54855, 57399, 69483, 74727, 95665, 115805, 124545, 172197, 208449, 286995, 347415, 373635, 440059, 860985, 1042245, 1320177, 2200295, 3960531, 6600885, 19802655]

約数ペア:

[(1, 19802655), (3, 6600885), (5, 3960531), (9, 2200295), (15, 1320177), (19, 1042245), (23, 860985), (45, 440059), (53, 373635), (57, 347415), (69, 286995), (95, 208449), (115, 172197), (159, 124545), (171, 115805), (207, 95665), (265, 74727), (285, 69483), (345, 57399), (361, 54855), (437, 45315), (477, 41515), (795, 24909), (855, 23161), (1007, 19665), (1035, 19133), (1083, 18285), (1219, 16245), (1311, 15105), (1805, 10971), (2185, 9063), (2385, 8303), (3021, 6555), (3249, 6095), (3657, 5415), (3933, 5035)]