218248420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{4261}}^1$

素因数の和:4480

約数の個数: 48

約数和(自身を含む): 496199088

約数和(自身を除く): 277950668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 788, 985, 1970, 2561, 3940, 4261, 5122, 8522, 10244, 12805, 17044, 21305, 25610, 42610, 51220, 55393, 85220, 110786, 221572, 276965, 553930, 839417, 1107860, 1678834, 3357668, 4197085, 8394170, 10912421, 16788340, 21824842, 43649684, 54562105, 109124210, 218248420]

約数ペア:

[(1, 218248420), (2, 109124210), (4, 54562105), (5, 43649684), (10, 21824842), (13, 16788340), (20, 10912421), (26, 8394170), (52, 4197085), (65, 3357668), (130, 1678834), (197, 1107860), (260, 839417), (394, 553930), (788, 276965), (985, 221572), (1970, 110786), (2561, 85220), (3940, 55393), (4261, 51220), (5122, 42610), (8522, 25610), (10244, 21305), (12805, 17044)]