28986516

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{257}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 79543464

約数和(自身を除く): 50556948

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 241, 257, 468, 482, 514, 723, 771, 964, 1028, 1446, 1542, 2169, 2313, 2892, 3084, 3133, 3341, 4338, 4626, 6266, 6682, 8676, 9252, 9399, 10023, 12532, 13364, 18798, 20046, 28197, 30069, 37596, 40092, 56394, 60138, 61937, 112788, 120276, 123874, 185811, 247748, 371622, 557433, 743244, 805181, 1114866, 1610362, 2229732, 2415543, 3220724, 4831086, 7246629, 9662172, 14493258, 28986516]

約数ペア:

[(1, 28986516), (2, 14493258), (3, 9662172), (4, 7246629), (6, 4831086), (9, 3220724), (12, 2415543), (13, 2229732), (18, 1610362), (26, 1114866), (36, 805181), (39, 743244), (52, 557433), (78, 371622), (117, 247748), (156, 185811), (234, 123874), (241, 120276), (257, 112788), (468, 61937), (482, 60138), (514, 56394), (723, 40092), (771, 37596), (964, 30069), (1028, 28197), (1446, 20046), (1542, 18798), (2169, 13364), (2313, 12532), (2892, 10023), (3084, 9399), (3133, 9252), (3341, 8676), (4338, 6682), (4626, 6266)]