17981886

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 23821890

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 71, 78, 102, 142, 191, 213, 221, 382, 426, 442, 573, 663, 923, 1146, 1207, 1326, 1846, 2414, 2483, 2769, 3247, 3621, 4966, 5538, 6494, 7242, 7449, 9741, 13561, 14898, 15691, 19482, 27122, 31382, 40683, 42211, 47073, 81366, 84422, 94146, 126633, 176293, 230537, 253266, 352586, 461074, 528879, 691611, 1057758, 1383222, 2996981, 5993962, 8990943, 17981886]

約数ペア:

[(1, 17981886), (2, 8990943), (3, 5993962), (6, 2996981), (13, 1383222), (17, 1057758), (26, 691611), (34, 528879), (39, 461074), (51, 352586), (71, 253266), (78, 230537), (102, 176293), (142, 126633), (191, 94146), (213, 84422), (221, 81366), (382, 47073), (426, 42211), (442, 40683), (573, 31382), (663, 27122), (923, 19482), (1146, 15691), (1207, 14898), (1326, 13561), (1846, 9741), (2414, 7449), (2483, 7242), (2769, 6494), (3247, 5538), (3621, 4966)]